How To: Install Windows 7 Or Windows 8 From USB Drive [Detailed 100% Working Guide]

This guide works 100% for Windows 7 and Windows 8 unlike most of the guides out there. I have seen many sites/blogs that have “Install Vista from USB guide” but either with incomplete steps or not working guide. I have also seen some guides that don’t’ use proper commands in this guide. After spending many hours I have come up with this 100% working guide to install Windows 7 and Windows 8 from USB flash drive.

Bootable USB drive

I just did this method on one of my friends machine and installed Windows 7 and Windows 8 . The main advantage is that by using USB drive you will be able to install Windows 7 or Windows 8 in just 15 minutes. You can also use this bootable USB drive on friend’s computer who doesn’t have a DVD optical drive.

The method is very simple and you can use without any hassles. Needless to say that your motherboard should support USB Boot feature to make use of the bootable USB drive. And if your PC doesn’t support booting from USB, you can still install Windows from USB by following our how to install Windows 7/8 from USB drive even if your PC doesn’t support USB boot feature.

How to install Windows 10 from USB drive guide might also interest you.


  • USB Flash Drive (Minimum 4GB)
  • Windows 7 or Windows 8 installation files.

Follow the below steps to create bootable Windows 7/Windows 8 USB drive using which you can install Windows 7 or Windows 8 easily.


Step 1: Plug-in your USB flash drive to USB port and move all the contents from USB drive to a safe location on your system.

Step 2: Open Command Prompt with admin rights. Use any of the below methods to open Command Prompt with admin rights.

*Type cmd in Start menu search box and hit Ctrl+ Shift+ Enter.


*Go to Start menu > All programs > Accessories, right click on Command Prompt and select Run as administrator.

Step 3: You need to know about the USB drive a little bit. Type in the following commands in the command prompt:

First type DISKPART and hit enter to see the below message.

Bootable USB Drive

Next type LIST DISK command and note down the Disk number (ex: Disk 1) of your USB flash drive. In the below screenshot my Flash Drive Disk no is Disk 1.

Step 4: Next type all the below commands one by one. Here I assume that your disk drive no is “Disk 1”.If you have Disk 2 as your USB flash drive then use Disk 2.Refer the above step to confirm it.

So below are the commands you need to type and execute one by one:







(In the above command, replace NTFS with FAT32 if your system supports UEFI)

(Format process may take few seconds)



Don’t close the command prompt as we need to execute one more command at the next step. Just minimize it.

Bootable USB Drive

Step 5: Next insert your Windows7/Windows 8 DVD into the optical drive and check the drive letter of the DVD drive. In this guide I will assume that your DVD drive letter is “D” and USB drive letter is “H” (open my computer to know about it).

Step 6: Maximize the minimized Command Prompt in the 4th step.Type  the following command now:

D: CD BOOT and hit enter.Where “D” is your DVD drive letter.

CD BOOT and hit enter to see the below message.

Step 7: Type another command given below to update the USB drive with BOOTMGR compatible code.



Where “H” is your USB drive letter. Once you enter the above command you will see the below message.

Step 8: Copy your Windows 7 or Windows 8 DVD contents to the USB flash drive.

Step 9: Your USB drive is ready to boot and install Windows 7 or Windows 8. Only thing you need to change the boot priority at the BIOS to USB from the HDD or CD ROM drive. I won’t explain it as it’s just the matter the changing the boot priority or enabling the USB boot option in the BIOS.

Note: If you are not able to boot after following this guide means you haven’t set the BIOS priority to USB. If you got any problem in following this guide feel free to ask questions by leaving comment.

Update on Jan 11, 2012: If you find this guide difficult to follow, please use the easy-to-use guide to create a bootable USB to install Windows 7  or Windows 8 using official tool.

This guide works 100% for Windows 8/8.1 as well. Make sure you follow all steps correctly and launch the Command Prompt with admin rights (as given in the guide) to avoid errors. Good luck!



  1. Noely JoBerg says

    I created a bootable Win 7 Ultimate USB (Sandisk Cruzer) disk tonight. I followed your instructions to the letter & it worked. I didn’t go through the whole installation, just until before you have to format the C drive.

    My laptop is an Acer Aspire E1-431G V1.24. UEFI: Insyde Corp. V1.24 if that helps. You need to set ‘USB HDD’ to boot first in the BIOS (there are similar options like FDD, DVD etc).

    I think I’m home free for the full installation. Just waiting until I buy my new HD next week, Kingston Hyper-X SSD, before I reinstall.

    Also looking forward to trying out Win 10 using the same method, when they bring out the full version…

    p.s. My Windows 7 CD is very old & couldn’t be read by my DVD drive. I had to use a friends computer to copy the CD to (a different) USB drive, then copy that to the C drive on my computer. I just changed the relevant drive letters in the guide & it worked like a charm 🙂

  2. Kiraee says

    I’ve been using this guide for some years now for every windows versión possible and it works.

    Btw, I have used this with windows 10 around 5 times already with different USB sticks and it works.

  3. MUZAMIL FIDA says

    got an error while giving command bootsect.exe/nt60 E:
    “could not map drive partitions to associated volume device objects:
    access is denied”….while i am using 8GB USB
    tell me what i should do

  4. MUZAMIL FIDA says

    got an error while giving command bootsect.exe/nt60 h: as
    “could not map drive partition to assosiated volume device objects:
    access is denied”
    while i am using usb of 8GB

  5. michael says


    i’ve been doing the diskpart thing for my USB disk for quite sometime now and i’ve been able to install windows 7 on dozens of machines.

    but just this morning i get the message:

    Windows Boot Manager?
    Windows failed to start. A recent hardware or software change might be the ?cause. To fix the problem:

    1. Insert your Windows Installation disc and restart your computer.
    ?2. Choose your language settings and then click “Next”
    ?3. Click “Repair your computer”
    If you do not have this disc, contact your system administrator or computer ?manufacturer for assistance.

    File: \Boot\BCD

    ?Status: 0xc000000

    Info: An error occurred while attempting to read the boot configuration data.

    My Windows 7 installation file is not an ISO and not in a DVD. I just copied the files onto the USB disk.

    Can you help me with this please ASAP.


  6. Markus says

    The guide is definitely not working when attempting to install Windows 7 on Asus UX32L
    Neither does the guide with the windows tool.

    When chosing the USB as Boot device, the system just shows a back screen for a short time and then switcheds to the normal HD with the preinstalled win 8.1

    BTW no guides for any kind of USB Boot Stick work for this POS machine LOL

  7. Chandrashekar C says

    Awesome…. I am able to boot my USB!! thank you so much. Its very easy now. Once again Thank you.

  8. Dinesh Jangid says

    Thanks Dear,

    All things are set as shown in your guide but in starting message showing: Invalid partition.

    What to Do?

    Earlier I have successfully installed Windows 7 home basic with same specifications in the same configuration Desktop PC. But this time I tried to install Windows 7 Ultimate, which did’t succeed.
    Dineesh Jangid

  9. Dinesh Jangid says

    Thanks dear, i have ever tried many options and was fail to install window by USB flash drive, but this way I didn’t face any problem to install windows by USB.

    Thanks again
    Dinesh Jangid

  10. nonnosh zaki says

    thanks ,your explanation was very clear,thanks a lot

    could i know if i want to put windows xp in the same flash ,what procedure should I follow

  11. A happy guy says

    Thanks for this great guide, you just saved another netbook and some of my nerves!

  12. John says

    I got my SD card in my lappy.
    And the install windows box says select driver to be installed.
    But nothing shows.
    I do have the hide drives that are not camptable unchecked also

  13. Ssellers says

    I followed every step but when I tried to boot received message “boot manager missing”. Help!!!

  14. Flo says

    Hi! Great guide. Thanks a lot! One question, though; if I copy both win XP and win 7 on USB, will they both boot up? Thanks!

  15. Nirmal says

    Got the following error message after putting bootsect command

    This tool can only be run on systems booted using a PC/AT BIOS. This system
    was booted using EFI or some other firmware type.

    Can you help??

  16. Raza says

    Best guide <3 Help me quick understand how to install windows in my laptop using usb. Thanks man!

  17. Luis says

    Helped me a lot. Quick and easy, no hassle and additional software required to install. Thank you.

  18. Nesho says

    Thank you so much for this guide. It’s so clean to follow and it worked from the first time. 🙂

    Definitely will follow your blog! Cheers!

  19. Authentic314 says

    Trying to do this directly from cmd on install disk no OS on the laptop no internal hdd, just install DVD and USB drive. Is this possible?

  20. JT says

    Is this reversible? Once I’ve done this and used it to boot up Windows, can I delete the contents and use it as a normal USB drive again? Thanks!

  21. Avach says

    Followed the steps (even tried with Win 7 USB DVD download tool), boot priority is set to USB. But nothing happenes, disabled other boot options and it just skips to bios. Tried with multiple flashdrives, the USB socket must be working as well.

    Any suggestions?

  22. Tobiasz says

    after week i finaly can install windows frum my flash drive
    I don’t now way but after 2 years first time universal usb installer has disapointed me and it was giving back bcd boot ero now its working with your guide soo again rthanks

  23. Jamie says

    Thank you sooo much! I have searched, found another utility that didn’t work, and finally found this. Thanks again!

  24. EDJAHMAN says

    Thank you for the guide!

    It was exciting using DOS commands. I haven’t used them in such a long, long time!

  25. CampinGoDance says

    I have already a soft copy of windows 7 and i don’t have optical DVD drive so im looking for USB installation of windows OS how should i continue to step 5 when i don’t have both DVD drive and DVD\CD of windows OS 7-8 .

  26. Lien Le says

    Regarding to grendel54 says
    July 31, 2014 at 11:55 am

    I can do everything but when i get to…

    Step 7: Type another command given below to update the USB drive with BOOTMGR compatible code.

    It says…

    “Target volumes will be updated with BOOTMGR compatible bootcode.

    Could not map drive partitions to the associated volume device objects:
    Access is denied.”


    Answer: Go to Start menu > All programs > Accessories, right click on Command Prompt and select Run as administrator. Then followed step 7 again, it will work.

  27. ntop says

    after i try to boot i get it to but when i start to install and it says i need a driver for my dvd drive and i dont know the make of my laptop to even get a driver. is there an alternative route around this?

  28. Varazir says

    Is there a way to have both win7 and win8 installation media on the same USB drive and you get a boot up menu when you boot up the drive ?

  29. satyanarayana says

    F:\boot>bootsect.exe /nt60 f:
    this version of F:\boot>bootsect.exe is not compatible with the version of windows you’re running.
    check your computer’s system information to see whether you need a x86 (32 bit) or x64 (64 bit)
    version of the program, and then contact the software publisher.

  30. Rusty says

    I want to run windows 7 on my new windows 8 computer can I do this? And/or run it from my old hard drive connected to my new computer? Thanks.

  31. john A says

    So tiring and complicated procedure with a dozen of steps! I didn´t even try ; there are a USB install progrmas with just one click or two….thank you anyway.

  32. JOSH says

    so, i cant find where i went wrong but i cant complete step 7. the usb is seen as a MBR and not a drive(so no H:) someone have any thoughts on this

  33. so says

    Is it possible to add two versions of windows 7 on the same usb flash drive? Like x86 and x64, both on same flashdrive? I mean, with some kind of bootmenu… Thanks!

  34. Kyle says

    Hey. Followed every step without any issue but when I try to boot from the USB I the message “BOOTMGR missing” any help would be great

  35. Kyle says

    Hello. Completed every step without issue but when booting from the USB first message I get is BOOTMGR missing.
    Any help would be greatly appreciated.

  36. David says

    This doesn’t work if you booted UEFI, which is the default under all modern computers running Windows 8. This is the source of all the people complaining about “This tool can only be run on systems booted using a PC/AT BIOS” errors.

    The information is helpful, but you should state the issue with Windows 8 at the beginning in order to steer people towards other solutions.

  37. SolidSonicTH says

    Works for Windows 10 as well, lol.

    Not that I really had any doubt since things have been pretty standard since Vista.

  38. Adeyemi Oluwaseyi says

    I use the command in step 4 FORMAT FS=NTFS several times and it keeps giving me “100% completed Disk has encountered an error: the parameters is incorrect. see the system Event log for more information”… Please what do I do next or what may be the problem, and what is the solution. Hope to hear from you soon. Thanks

  39. Raza says

    Thanx admin for this informative post. I tried this and made up to a successful boot from flash…but im facing problem during installation of windows…when system gets restarted during windows installation, it starts a fresh installation again. (Procedure of windows installation starts from the beginning) .Need Help on how to get rid of that.
    Regards Raza.

  40. victor says

    What must I do when I’m trying to boot de cd its says: this version of E boot is nt compitable with the version of windows you are ruunning check your computer system information

  41. Ken says

    What should I do when my version of windows is an iso file, & my PC doesn’t have a CD drive?

  42. WILL says


    E:\boot>BOOTSECT.EXE /NT60 F:
    This tool can only be run on systems booted using a PC/AT BIOS. This system
    was booted using EFI or some other firmware type.

  43. George says

    YES! Excellent fix to my BOOTMGR missing error. I was able to install Windows 7 using a USB flash drive successfully. Thank you!

  44. Chris says

    In step 7, after typing BOOTSECT.EXE /NT60 F: I got “This tool can only be run on systems booted using a PC/AT BIOS. This system was booted using EPI or some other firmware type.”

    Could you please state how to get around this?

    I could see you got the same post earlier this year by Mario

  45. Azhar says

    sir thanks
    this the only method which i have found use full and correct.
    i have installed windows 7 successfully on my Samsung note book.
    again thanks

  46. grendel54 says

    if you are getting “Access is denied” on step 7…you need to run Command Prompt as administrator.

    in windows 7…you can go to your apps…type in cmd right click on command prompt and click run as administrator.

  47. grendel54 says

    I can do everything but when i get to…

    Step 7: Type another command given below to update the USB drive with BOOTMGR compatible code.

    It says…

    “Target volumes will be updated with BOOTMGR compatible bootcode.

    Could not map drive partitions to the associated volume device objects:
    Access is denied.”


  48. MARCELO says

    Como seleciono a partição?
    Quando digito “ACTIVE” a resposta é “nenhuma partição selecionada.
    Perdoe a ignorância, não entendo nada de DOS e estou a dias tentando formatar meu net.
    as outras formas com softwares já tentei e não deu certo.
    Eu ditito tudo isso abaixo? Incluindo “Criar partição principal e selecione partição 1?


    Criar partição principal

    Selecione a partição 1


    Obrigado pela paciência.

  49. MAHESH says

    my computer doesnot show pendrive in the list (DISK LIST) command. only the HDD is shown. give me the solution

  50. Matas Danisas says

    Even though I know something about computers, I didn’t understand any of the sentences in this tutorial. Can anyone help???

  51. Brian Kincaid says

    Even us old school IT Vets can learn a thing or two 🙂 Thanks for the DOS walkthru, big help. Formatting a drive for my son’s laptop and his CD just took a dive. Great work here.

  52. Alexander says

    The bios wouldn’t recognise my USB DVD-drive, so this was a great work-around. Thanks a bunch for the guide. Simple, straight forward and I like that there’s no extra software to download either.

  53. Kiel says

    Thank you, this one works for me, im able to create windows 8.1 usb bootable installation.

  54. Huy says

    Hi! Thanks for the post!

    In step 7, after typing BOOTSECT.EXE /NT60 F: I got “This tool can only be run on systems booted using a PC/AT BIOS. This system was booted using EPI or some other firmware type.”

    Help please!

  55. Mario says

    thanks for your help now I wonder how to get back to the old situation because i can see usb on my pc

  56. Alexander says

    It’s a very good, simple guide, but there’s something I can’t get right. I’m running a windows 7 32 bit, and I’m just trying to upgrade to a 64 bit. When I type BOOTSECT.EXE /NT60 1:, I get a message saying that the bootsect isn’t compatible with my 32 bit OS. Which is counterproductive because I need to use this to install my 32 bit OS :(. Can anyone help me as to show me what I’m doing wrong?

  57. Robert says

    Thank you for making this guide. Idk why other guides can’t get it right, but yours tells every step very clearly and doesn’t leave anything out. Cheers!

  58. AgedTramp says

    Very useful, very clear.

    David:- copy the whole thing, as in open explorer, click on the dvd drive, click on any file in the right window, hit Ctrl +A, Ctrl +c, move to your pendrive, click on the drive, then Ctrl +V, then wait, and done.

  59. david says

    this is a pretty stupid question but when you say copy the content from the dvd ( in my case an iso file) to the usb…. do i need to copy the whole file or do i need to extract somehow its contents to the usb ? Power iso

    someone answer plz

  60. hugo says

    also, my computer uses UEFI bios but i substitute ntfs for fat32 when formatting, does this play a part at all?

  61. hugo says

    i have no problem creating a bootable USB using part disk and copying bootsect.exe but it still will not boot from start up. I have a iso and the original disk and am unable to perform a clean install. I have used the disk to perform a clean install previously and it worked like a charm, i do not have a optical drive otherwise i would just use that instead.

    If you have any suggestions as to where i could be going wrong?
    i am trying to clean install win7 ultimate on a pc that had win 7 64 previously

  62. NIBIN says

    i lost my existing os and have no cd rom. how to install windows 7 or 8 on my pc from a usb drive. i never have a way to make it as bootable device. can u help??

  63. Alex says

    Great tutorial. Worked like a charm. The only suggestion / comment that I had has already been posted which refers to the formatting of the pen drive. Considering it is an actual pen drive, there is no need to do a FULL format, quick format should work just fine and save some time. But all in all, excellent tutorial! Congrats!

  64. Richard says

    This worked PERFECTLY!!! Thank you so much!!! I tried so many things before and THIS is what worked for me! Thank you Thank You THANK YOU!

  65. Pavel says

    If you have problem like “This tool can only be run on systems booted using a PC/AT BIOS. This system
    was booted using EFI or some other firmware type.” just do full reboot your PC, it should help.

  66. DWalker says

    There is an extra command listed in step 6. Guide says:

    “Step 6: Maximize the minimized Command Prompt in the 4th step.Type the following command now:

    D: CD BOOT and hit enter.Where “D” is your DVD drive letter.

    CD BOOT and hit enter to see the below message.

    Step 7: …”

    The second “CD Boot and hit enter…” is superfluous, I think. Otherwise, great directions.

  67. Ashim says

    Hey.. when I open command port and type DISKPART and hit enter and then type LIST DISK then there was showing only my tow HARD DISK Drive only.. my PAN DRIVE is not showing in the LIST DRIVE. How can I solve it?

  68. jonnie says

    Hey, just about to try this cool guide, but how the heck do you get into the bios or boot options on a sony p-series ? thx

  69. May says

    Reading the tutorials on creating a USB Win 7 repair drive, I thought you might want to add the following some where. Concerning error code 0x80070057 and not being able to restore from a WindowsImageBackup. Most any USB drive method will work for Win 7 as long as you remove the USB flash drive just before the reimaging process starts. Let it find the image and click next. Then remove the flash drive. Once it is restored it will reboot. I downloaded a Win 7 iso from Digital River and used the Microsoft Windows 7 DVD Tool to make mine, but I tried many methods from tutorials and most work if you unplug them as I’ve described. Any repair disk on a DVD will work as a source for needed files as well (You just need to get a decent tutorial online for making the USB bootable.

  70. robert says

    This works fine on older BIOS, but am afraid the EFI version stops it at the last phase. Do you have a version to allow this to work on an EFI BIOS PC (running Win7 Pro 64)

  71. mihkel says

    Someone here mentioned, that a quick format saves your data, deletes only the “mention” of it. Not to pick on anyone, but the difference between a quick and a full format is that when choosing full format, the disk will also be checked for bad sectors, and that is the main reason it takes so much longer than a quick format. All in all, USB keys don’t fail with bad sectors (they, well…just fail), so I really don’t see a reason to do a full format on it. Nevertheless, this tutorial is great. I’ve used it every time when reinstalling windows. I only wonder why it wont stick to me. 🙂
    This goes to show, that you don’t need additional 3rd party apps all the time.

  72. ntomi26 says

    I tried like a hundred “solutions” from the web, but onli this one helped me bring an ancient laptop back to life. Thank you so much! You helped me out big time!!! 🙂

  73. tanuzzo says

    i used this guide and successfully installed windows, but now i would like to use my usb normally again. when i insert it into the pc i can see the usb in computer, but it is shown as hidden and in diskpart it shows that it is 0B. how can i have access to my usb again?

  74. Yvette Faye says

    this was very helpful, and Yes be sure and log into the Command Prompt as Administrator because this makes Step 7 work, used the XCOPY with /E switch to copy the Windows 7 DVD to the USB H: Drive, hope hit makes it work like the DVD for install.

  75. The corrector says

    WARNING: a USB flash drive WILL NOT format in seconds, this guide is wrong. a 16Gb drive will take 45-60 minutes.

  76. Alex says

    If you just change ‘FORMAT FS=NTFS’ to ‘FORMAT FS=NTFS QUICK’ it will do a faster format. meaning it doesn’t destroy all the data, but only the mention of it, so it still will appear formatted (and don’t worry all the old data will just be overwritten)

  77. admin says

    It looks like your USB device is write protected. You need to remove write protection first.

  78. cysag says

    Not working !
    Cannot go beyond step 7 got access denied and does not let me copy iso file !! i tried also with isotousb.exe tool, same things error message: cannot copy). Also tried with my perso laptop (thinkpad) with w8.1 by mounting iso from file explorer and getting an ‘access denied’ mssg after typing step 7 – Any advice?

  79. lloo says

    after doing this without success my flash can no more read neither caan it be formated please help me

  80. FAIZAN says

    it’s work much better but ntfs formatting very slow it’s take lot of time to format….

  81. Kexin says

    OK, I have spent some hours to find this out. And I am now sure about two things. (1) All of them who said something like “it works” had a 32 bits version of Window 7. With 64 bits version, you have to take the key off and put it in again. (2) After embedding USB3 drivers (e.g. 6 files from HP’s SP54511, x86 or x64) into boot.wim, this guide works also for USB3 ports (also on none-HP machines). But still 64-bits needs out-and-in manoeuvre, while x86 works just fine.

  82. Kexin says

    Thanks! Very useful guide. The created USB key will actually boot. But Windows 7 installation wants to have some CD/DVD drivers to gain access to this USB key again. If the key was inserted to an USB2 port, I have to cancel the install, remove the key and insert it back again (to the same port or another USB2 port) and try to install once more. If the key was inserted to an USB3 port, I have to change it to an USB2. Was there only me who run into this problem? Is there a way to embed some generic USB3 drivers to the source (now it is on a USB key), so that Windows Install will load them automatically? And I don’t need to change port anymore. What about if I don’t have one USB2 port?

  83. Brownie says

    Hi,i did all what uve wrote down here and it says that BOOTMGR is missing,i redid all,and still,please help!

  84. pawan says

    dude help me i don have a cd/dvd writer in my laptop.. how can i do the below step :

    Step 5: Next insert your Windows7/Windows 8 DVD into the optical drive and check the drive letter of the DVD drive. In this guide I will assume that your DVD drive letter is “D” and USB drive letter is “H” (open my computer to know about it).

    Step 6: Maximize the minimized Command Prompt in the 4th step.Type the following command now:

    D: CD BOOT and hit enter.Where “D” is your DVD drive letter.

    CD BOOT and hit enter to see the below message.

    Step 7: Type another command given below to update the USB drive with BOOTMGR compatible code.



    Where “H” is your USB drive letter. Once you enter the above command you will see the below message.

    Step 8: Copy your Windows 7 or Windows 8 DVD contents to the USB flash drive.

    please help me ASAP yar.. kinda stuck !!!:(;(

  85. edu says

    and when im done installing windows and want to use my usb normally again what do i do? should i only erase all the files? a quick format?

  86. Hemn Michael says

    Need Help…..!
    CD/DVD windows se7en
    UltraISO > for create windows convert to extension.iso
    Instead of using a DVD, mount a virtual CD-ROM
    USB > 4GB or more gygabyte


  87. Utsav says

    @Gio tis
    Hope you managed to get it done, if not just download a powerISO or any other virtual drive program. set virtual drives to 1. it will appear in your ‘My Computer’. right click on the virtual drive and mount the image you downloaded from TPB.
    Hope it helps.

    I made the same mistake
    here replace H with your USB drive letter.

  88. Remnant says

    great. format fs=ntfs does not take a couple of seconds, it takes OVER 4 HOURS on a 64 gb usb. and you can’t interrupt it after its started without destroying the usb. so much for saving time

  89. Giotis says

    i dont have a DVD with windows on it, i just download them from tpb..
    so in step 5 and above what i can do ??
    just go in step 7 and contineu and paste in USB the contents i download ??

  90. Jone says

    Target volume will be updated with BOOTMGR compatible bootcode.

    Could not map drive partitions to the associated volume device objects: No access.

    What???? Tried this on 2 different usb sticks

  91. Asif says

    Works. You can also use your PC folder if you have windows dumped in any of your machine folder.Just use the boot command in that particular folder.

  92. Darryl says

    To all the chums getting stuck at step 7. I had the same error message as some are getting. (could not open the volume root directory) I noticed the USB drive ‘busy’ LED was blinking, and the icon for the drive was greyed out in Win Explorer. I let it go for an hour, but it was still blinking, so I just pulled the drive and re-inserted it. Icon changed, LED stopped blinking, and I was able to run bootsect.exe successfully.

  93. matthew says

    on the (D:CD BOOT),mine keeps on saying drive not ready.what am i doing worng or what can i do to fix the problem

  94. Raju says

    hi thanks for the guid.. but how to copy windows 7 file from my hard disk to the USB DRIVE instead of using a CD DISK.. i have already coppied a cd disk and saved it into my hard disk.. please give me a reply..

  95. kim says

    the part where you input the command (D:CD BOOT),mine keep on saying drive not ready.what could be the problem?

  96. shashi says

    the problem occurs when it is installed, restart the pc is running the setup again from the beginning ..setup is not resume, and pc is not ask– boot from usb, setup is auto start..pls help me…

  97. bhanu says

    i lost my D,E,F drives while iam doing the commands.
    how can i recover them. please help me as soon as possible.

  98. Trestin says

    If you have an ISO, you can download a freeware tool like Virtual CloneDriver to mount the iso as if it were a cd. Worked for me.

  99. ahmed says

    If I have the file of windows7 setup in my laptop, then how can I make USB as a Bootable device through command prompt to copy and install the windows from USB?

  100. roh says

    Thank you very much! one of the few step-by-step guides where what happens in the screenshots is exactly what follows on your pc, this was very useful and worked perfectly without me having to improvise, simply follow each step exactly and it will work

  101. Deepak Gupta says

    i got the compatibility message. its messsage for 32 or 64 bit version.
    please tell, now what i do.

  102. MarmoteX says

    Hi, thank you so much for this guide. I was stuck at step 7 (bootsect.exe) and what i did was to do the step 2 again: *Go to Start menu > All programs > Accessories, right click on Command Prompt and select Run as administrator.

    It worked

  103. MARVIN_ENGG says



  104. Hawa says

    actually, I have this problem tried lot’s of way to format my laptop but it work …my laptop is Dell inspiron DVD RW…isn’t now I wanna format my laptop via bootable usb…I used your guide for that meaning but it wasn’t work and when I used this flash on other laptop it worked perfectly…I don’t know what is the problem with my laptop…and so please help me to solve this problem …thanks.

  105. Mikel says

    I’ve tried a couple of other methods but it did not work out for me well, lot of errors.

    But this worked for me so smooth. I want to thank you for taking time to do a such a clear and fantastic guide. You have helped me and others big time. YOU ARE THE BEST!!

  106. Marvie says

    instead of using DVD, I use the ISO file. Load it in ISOBuster or PowerISO and then select extract contents to….

  107. Martijn says

    Also, why does diskpart do this?
    The ASSIGN command assigns a drive letter that is already in use by a network mapping. Grmbl grmbl, and other noises!

    Solution: manual override 🙂


  108. Martijn says


    Do that instead. It’s been a few times that I accentidally did a full format, and doing that on a USB stick is *NOT* just a few seconds!! Please change this in the guide, dear editors.

  109. Hoai Pham says

    the Format command is very slow. There’s an other way to speed up this command is using quick format option.

    format fs=ntfs quick

  110. Mr Right says

    Titan Uranus, you are special, this guide shows you how to make a bootable USB copy of windows, so in the first place you would need to have the Windows files in order to create the bootable USB. Whether you have the original on CD or have downloaded a copy from the web, without the original files you would not be able to do this. So the moral to the story is, put your brain in gear before you type anything in future because you are only making yourself sound a little dim.

  111. Titan Uranus says

    Nice guide, until step 5 where it requires a CD 🙂 pretty retarded to call it FROM USB then xD

  112. yaser says

    THNX. WORKS LIKE A CHARM. 100% .THNX FOR UR WORK. (guys follow all the steps correctly and you will not face any problem )

  113. Faisalpasha says

    after trying the “BOOTSECT.EXE /NT60 G:” command there was a prompt saying “Could not map drive to the associated volume device objects: Access is denied. How can i get passed this issue?

  114. Jim Wilmot says

    After moving my files from the flash drive to a file on the computer and going to the next step…cleaning…the drive, I can no longer read the flash drive or format it. It rendered it useless! Thanks!!

  115. ASEEL says

    Please, i have followed each step and i am sure i did not make any mistakes along the steps.. When i got to Step 7: “Type another command given below to update the USB drive with BOOTMGR compatible code”.

    I typed BOOTSECT.EXE /NT60 G: where (G: represent my USB drive and F is my CD/DVD drive.)

    The error i got after type BOOTSECT.EXE /NT60 G: was (BOOTSECT.EXE was not recognized and a internal or external, operable program or batch file.

    Please help as i think that is almost the finishing part of your tutorial here.

    I am running on windows 7 Ultimate, 32 bits.

    Thanks for reading and i hope u re gonna get back to me soonest

  116. PANKAJ says

    D:\>CD BOOT

    D:\boot>BOOTSECT.EXE /NT60 I:
    Target volumes will be updated with BOOTMGR compatible bootcode.

    Could not map drive partitions to the associated volume device objects:
    Access is denied.

  117. lethabo says

    after typing in “list disk” i can only see my hard drive,not usb,tried a variety of usb’s,but the problem still persists!……can you help me on this one?….

  118. Rick Shultz says

    I was fine until like many others I got to the part about inserting the CD. Well, what if you don’t have the CD. Many if not most OEM computers don’t come with a CD and mine is a netbook so there isn’t even a drive, so how about instructions to make the bootable USB from the hard drive itself?

  119. tor erik says

    hey there, looks like an awsome guide, but it is possible to do it without the CD? i bought 32 bit windows 7 ultra, but now i wanna upgrade to 64 bit and i dont have the money to buy it. so i downloaded windows 7 ultimate 64 bit from piratebay, can i just copy the files to the usb or how to do?

  120. littledanniel says

    Thanks for big help. Just one thing, in step5: D:CD BOOT can be just D: — that’s why next step you need CD BOOT.

  121. Ranto says

    Great work Dude!! That works like a charm, very easy and no need to install software. Thanks you very very much

  122. faysal says

    hi, nice work, but its not working for me, i had 2 hard drive 1 is 40 gb and other is 80 gb, both shown after disk part command but i cant see my usb drive in diskpart, i m having 8 gb kingston usb drive, any Solution ?

  123. Adrian says

    The information in this article is excellent. It enabled me to create either a Win-7 or Win-8 bootable SSD drive without any problems. I wish I had read it sooner !!


  124. ridwan ali says

    when i strart installing it asks me to locate a driver but i don’t have. Pls tell me what to do.

  125. win64 says

    I had small issue. It was:

    This version of D:\boot\bootsect.exe is not compatible with the version of Windows you’re running. Check your computer’s system information to see whether you need a x86 (32-bit) or x64 (64-bit) version of the program, and then contact the software publisher.

    I tried to use 64bit windows bootcode from my 32bit windows, but got an error. But i fixed it easily. I simply used 32bit windows to create bootcode and then copied 64bit windows contents on my flashdrive.

    Other than that issue it worked like a charm. Thank you!

  126. Deeki says

    after trying the “BOOTSECT.EXE /NT60 G:” command there was a prompt saying “Could not map drive to the associated volume device objects: Access is denied. How can i get passed this issue?

  127. Federico says

    follow all the steps and when booting from my USB device does not boot, I put MS-DOS files and still no boot, you know that it can be

  128. raf says

    doesnt work under raid0_3ssd, wouldnt find raid driver from any other drive, ex.2nd pen drive

  129. Mark says

    Unfortunately this tutorial doesn’t work for me. I followed the steps like explained and did all the commands in the Command Prompt right. But when I try to copy the files from the DVD drive to the USB, I keep getting the following message: “Invalid MS-Dos function.” and it’s about the “the bootsect.exe.mui file”. I also tried with Windows 7 USB/DVD tool, but that also didn’t worked out for me. It kept saying that the selected file was not a valid ISO. I tried with three different ISO files, all home premium 32 bit, and with all the same error. Is there perhaps someone who can help me? I would really appreciate it.

  130. Naeem says

    i am follow all the procedure but when time come to install it will show me that setup was unable to create a new system partition or locate an existing system partition.
    i delete all partition but the problem as same.

  131. Jew says

    Why would you want a bootable USB version if you have the disk in the first place!? got to the step where you ask to pop in the Windows 7 disk WHICH I DONT HAVE since i wanted to boot from USB. FFS Seen you had another guide you ripped off from another site. w/e was dumb

  132. Dullaron says

    Oh you can’t install Windows on a USB hard drive. I tried this way. Other way works.

  133. Paul says

    It would be nice if you mention that a system with 32 or 64 bit computer is required.

  134. Vincent says

    This is not a 100% working guide. Where do i get the files to install windows 7/8 then?

  135. Murlidhar bhardwaj says

    I don’t have win7 DVD but I have win7 in my PC’s HDD. How can I make a bootable USB drive from PC’s HDD.Please reply fast.

  136. Stefan says

    This is not a 100% working guide, because this guide only applies to older computers. Computers with UEFI firmware cannot boot from NTFS volumes, only from FAT12, FAT16, FAT16B and FAT32 volumes.

  137. Herman says

    I tried following your guide and when I plugged the USB into my computer, it either tells me to put in something to boot from or it gives me a message about missing bootmgr.
    Also, FYI, yes, my boot priority is set to my USB drive.

  138. larie says

    this is a good tutorial, but i do have one problem, by selecting partition & creating partition primary am i creating and partitioning on my USB or on my system c. can u explain more about these two commands plz

  139. lolZor says

    Everything worked fine though I had some problems in step 7. But when I decided to skip the CMD format procedure and do it in the GUI (right mouse click on drive, format e.c.t) everything worked fine and I could install Win7 on my Netbook. Thanks a lot for this!

  140. FRANCO says

    You really helped me!
    I have tried other methods but none of them were successful like this one.

  141. Fdn says

    I used deamon tool insted of source dvd drive…
    An error displayed “Could not map drive partitions to the associated volume device object: Access id denied” when enter the command “BOOTSECT.EXE/NT60 K:” K is my destination flash drive
    What is the problem? Anyone help me

  142. thinklinux says

    Hey… Thanks for that post. It’s so easy : ) No more strange programs to make a bootable flash drive!

  143. Asim Ishaq says

    Works perfect. I created many bootable USB using this method, however one thing I noticed that the format from CMD takes a lot of time to complete. Now I do all the steps except format it with windows.

  144. reyhane says

    hi . tnx i have one problem and it is …
    when i type format fs=NTFS it write 0 percent completed
    why ?
    can you help me ?!

  145. Eric says

    Lee, you can extract the contents of your image with WINRAR. Download it, install it, open your image, extract the contents to your usb, then uninstall WINRAR if you wish. Done. 🙂

  146. gil says

    First of all this is Really a good post, next vitalii don’t worry just try HP Disk Format tool, i hope issue will be fixed and u could format it.


  147. Vitalii says

    Hi, I also damaged my flash drive because FORMAT FS=NTFS performs full format. And during it I accidentally press Ctrl+C and after that my flash drive could not be formated by Windows at all.

  148. Tin says

    The only thing I did with this tutorial was fucking up my USB drive I can’t open it now ?

  149. Ryan says

    I guess you did not right click on CMD and run it as Administrator Sir, because I have the same problem like you and try to read again and found out that the problem is just I don`t run it as Administrator don`t try CTRL+SHIFT+ENTER, just right click and run as Administrator

  150. Dan says

    Thanks for this. Worked 100% for me.
    Is there any way to make the USB format procedure into a .bat file? I’m no DOS expert though, maybe this is impossible.

  151. Chwb says

    I followed the instructions exactly, when I change BIOS to boot from USB and restart I get the message NTLDR.exe missing or corrupt?

  152. wesam says

    So thanks for the useful guide and everything.
    Everything worked perfectly but I got to the point where in the end of the windows installation it told me to restart so I had to boot it from windows and not from the usb..
    and when I did, it said it will complete the installation.. it was updating but I didn’t think it would work cause it needed the USB to finish that..
    so it got me an error and asked me to re-do the installation..
    what do I do in this situation ? is there another way to do this.
    thanks in advanced 🙂


  153. Harriz says

    oh… i managed to change the CD and it went through but this time the error was this:

    It said ” target volume will be updated with BOOTMGR compatible boot-code.

    Could not map drive partition to the associated volume device objects:

    Access is denied.

    What does this mean and how can i fix this.


  154. Harriz says

    Please, i have followed each step and i am sure i did not make any mistakes along the steps.. When i got to Step 7: “Type another command given below to update the USB drive with BOOTMGR compatible code”.

    I typed BOOTSECT.EXE /NT60 G: where (G: represent my USB drive and F is my CD/DVD drive.)

    The error i got after type BOOTSECT.EXE /NT60 G: was (BOOTSECT.EXE was not recognized and a internal or external, operable program or batch file.

    Please help as i think that is almost the finishing part of your tutorial here.

    I am running on windows 7 Ultimate, 32 bits.

    Thanks for reading and i hope u re gonna get back to me soonest..

  155. Adam Saunders says

    Worked perfectly without any problems. Only confusing part was Step 6. I just navigated to the D Drive and ran the CD BOOT from there.

    Thank you for taking the time to write this out.

  156. AgedTramp says

    Wouldn’t using the /Q switch in the ‘format …’ line increase the speed of the format?

    The /Q switch does a Quick format, instead of the full format. It deletes the MBR, then creates a clean one.

  157. arunpradhapsingh says

    hello sir my laptop does’t have CD drive then how i can follow step 5……..pls ans me

  158. Andy says

    It sounds like you are trying to do this from Windows XP. Windows Vista or 7/8 would load diskpart in the same command prompt, as step 4/6 suggests. I’ll go ahead with the assumption that you are using XP.

    If you get access denied, either:
    A) you have some antivirus software or anti-spyware software that is blocking access to the boot sector of the drive
    B) You have a virus or some spyware that is blocking access to the drive
    C) You haven’t loaded the command prompt with admin privileges.

    To rectify option C, Press Winkey + R, then type cmd, and tick the “Run as administrator” checkbox. Then proceed.

  159. Tony says

    Thanks for the great tip and I could successfully make a bootable USB using 8G memory stick I had. I confirmed I could boot and install/recover on my Samsung ATIV 700T.

    Now, I want to save Recovery Image onto a USB stick (the file size is over 40G), so I bought a SanDisk 64G Extreme. I did not want to use two USB sticks, so I followed the step above and went through all steps without any errors like before, but the 64G drive is not recognized as a bootable drive. I tried on my desktop PC and the result is same.



  160. rhone says

    Thank you for this article. Saved some time and money by not having to install a DVD drive or buy software for USB loaded with bad stuff.

    I wish i had seen this article before wasting time looking for software to do this – one to create ISO, one to mount to USB or one to do both or whatever. What software i needed was confusing. This article cleared all that up in a couple minutes. I researched a couple dozen free versions, trial versions, even paid versions and most of them are reported to have adware, spyware, malware, etc on them.

    I started to use one of my XP machines, the one that had a DVD drive, but soon found this guide doesn’t work on Windows XP.

    I used my Win7 machine to create a bootable USB flash drive to put Win7 on it.

    I missed one little thing somewhere and had to start over.

    I installed Win7 from the USB drive on my other XP machine that did not have a DVD drive.

    Thank you.

  161. paul says


    Worth mentioning that if you are trying to create a boot usb key for a 64 bit o/s from a 32 bit o/s you need to use the 32 bit version of bootsect.exe (from a 32 bit boot dvd). The microsoft Windows 7 USB/DVD Tool will fail in this situation for the same reason (can’t run 64 bit binaries on a 32 bit o/s).

    Hope this helps others who run into this like I did.


  162. Indrek says

    Doesnt work for me after i type in the BOOTSECT.EXE /NT60 G: i get error:
    “Could not open the volume root directory. The parameter is incorrect.”

    I did everything exactly like in the guide, only difference is that im not using real dvd, i use mounted image.

    Can any1 tell me whats wrong?

  163. Jørgen says

    Hey Chris

    You have to run the commands from an elevated command prompt.
    Right click command promt and select “Run as administrator”

  164. chris says


    So I completed all the steps and when I get to the end and do bootsect.exe /nt60 I:

    (I have several hard drives so my usb thumb drive im using is the I drive)

    and receive the message:

    Target volume will be updated with BOOTMGR compatible bootcode.

    Could not map drive partitions to the associated volume device objects:
    Access is denied.

    Do you know why I’m being denied?

    Also for a tip, at the very end of the 4th step when you hit exit, this automatically closes the command prompt screen and takes you back to the first command prompt screen. So when you get to step 6, it confused me as this was already my current screen, I did not have to go back to any screen….

    Thanks much,


  165. swag says

    after following all the steps and setting up my desktop boot sequence as USB as my first boot device I get this message “BOOT MGR is missing press CTRL+ALT+DEL” pls. help me.. 🙁

  166. AMS says

    Hi there;
    Can anyone help me… I started following the guide but the command “list disk” gave me Disk 0 only which is obviously my HD. No USB disk listed although it is plugged and seen by windows properly.

  167. Andrei says

    Is it something wrong if I got this message?
    This message I got after step 7.

    Boot sector restoration tools
    Bootsect.exe updates the master boot code for hard disk partitions in order to switch between BOOTMGR and NTDLR. You can use this tool to restore the boot sector on your computer

  168. jean says

    download daemon tools and mount the iso you downloaded onto the virtual cd drive from daemon tools

  169. William says

    If the “FORMAT FS=NTFS” command takes too long for you, you can have it ignore disk Check by using “FORMAT FS=NTFS QUICK” and then it should be just a few seconds for smaller drives.

  170. Dhan says

    hey the thing is that i don’t have CD to boot but i have downloaded windows 7 from torrent and it is in hard drive so how do i do it.?

  171. Igor says

    I’ve found the solution. To all of you who will read this just unplug the USB before the first auto restart and you’re god to go.

  172. Igor says

    First of all very nice trick, saved me a lot of time, but still I’m haveing a one problem. Win are done with install (win7) and it’s time for the first restart, when I restart the whole instalation goes from begining, but it should continue modyfing win to the first start. What am I doing wrong?

    If you could answer in some time i don’t know, very fast i would be very gratefull, I mean very!

    Thanks in advance

  173. Gerhard says

    nice guide man, used it a couple of times. but i do have a question, would this method work with Windows XP also?


  174. Adrian says

    “Format process may take few seconds”….how about 15 minutes dude…anyway…thx for this “how to…”

  175. Dushyant Kumar (Maddy) says

    Nice dude. The great thing is there was no need for any third party software to copy windows. I successfully installed windows 8 using this trick and and using the same.

    Thanks a tonn !!!

  176. repair says

    “all files” to big to copy to flash drive.
    how do you strip dvd down without using another program like win to flash which will undo all of the above steps?
    or am i missing something…i did xp vista and seven before,but these new hp notebooks and netbooks are sometimes the ahci switch for windows 8

  177. aniwon says

    The mentioned “format fs=ntfs” isn’t going to take a few seconds, instead over 10-20 minutes.

    To do it quicker just type in “format quick fs=ntfs”.

  178. t says

    I complete all the 9 steps and i change my boot priority but nth came up.Only the old windows load.i can’t install windows7.what else do i need for Eee Pc 904HA

  179. Chris . says

    ===>> CAVEAT EMPTOR <<==

    1) You must right click cmd.exe and click "Run as administrator" or it will fail everytime.

    2) You cannot create a bootable 64bit Windows from within a 32bit Windows.

  180. ihsan says

    actually u must Add EXIT command. and then continue with bootsect.exe /nt60 “drive letter”:

  181. rn jobs az says

    I tend not to drop a ton of remarks, however i did a
    few searching and wound up here Install Windows 7 From USB.

    And I actually do have a couple of questions for you if it’s allright. Is it simply me or does it look like some of these responses come across like they are coming from brain dead folks? 😛 And, if you are writing on other online social sites, I would like to follow everything fresh you have to post. Would you list of the complete urls of all your community pages like your twitter feed, Facebook page or linkedin profile?

  182. Rayolaser says

    I did had the same issue. The solution that worked for me? I forgot to right click the Command prompt icon from windows and select run as Administrator. Issues the same command and it worked fine after that.

  183. Derp says

    I feel like such an idiot..because in step 3 I put a space where it didn’t belong and you made me see that. Thank you!

  184. Derp says

    I did everything on this article to a T, and when I boot from usb at startup it says windows could not be found and to unplug all hdds that don’t have windows on it. I tried that and it doesn’t work. Any suggestions?

  185. David K says

    I can’t get past step 4 😐 It doesn’t recognize the usb. The computer recognizes it, it just doesnt show up in the command prompt. Any suggestions? I’m using windows XP

  186. Stephen says

    I had this problem and the solution was very simple, the bootsect command is case sensitive.

    Make sure you enter it the correct way

    Bootsect.exe /nt60

  187. That guy says

    Did you originally open the command prompt by using Ctrl + Shift + Enter? That causes the command prompt to open with administrator privileges.

  188. Noel McDowell says

    You need to run your CMD window as Administrator, Rick. Do this, close the CMD window and press windows key, All programs (Win vista/7/8), accessories, and right click on the CMD prompt application icon and select “run as administrator” in the menu. Then try starting from step 7 again.

    Hope this helps,

    Noel McDowell

  189. Jim says

    Rick one method i would try is getting a live linux dvd and boot into it.
    then reformat the usb from there then boot into windows and follow the guide again. that is what i did

  190. Douggiefintry says

    Absolutely brilliant – thanks so such 🙂

    Spent hours trying to get WINDOWS 7 USB/DVD DOWNLOAD TOOL to work (it worked fine with a WIN 8 ISO made from original DVD but refuses to accept a WIN 7 ISO made the same way as a valid ISO file).

    This did the trick and got Win 7 back on my Notebook so I could then use the Win 8 Upgrade.

  191. sean says

    Rick says:
    February 27, 2013 at 11:38 am
    Im stuck at step 7 after i type “BOOTSECT.EXE /NT60 H:” (also i changed H twice my usb is F). It says “Could not map drive partitions to the associated volume device objects: Access is Denied”

    Any tips or anything that can help here?


    =Try n do it again in administrator mode… it works for me..

  192. Rick says

    Im stuck at step 7 after i type “BOOTSECT.EXE /NT60 H:” (also i changed H twice my usb is F). It says “Could not map drive partitions to the associated volume device objects: Access is Denied”

    Any tips or anything that can help here?

  193. someone says

    Yea but our iso image didnt work with that m$ tool and this thing did so i am happy he explained this 🙂

  194. umerubabmecha says

    its too bad method you have to just download windows 7 usb/dvd tool and insert in virtual cd than copy files into usb

  195. Saurabh kumar says

    Instead wasting your time in it… do these simple task:-
    1. Insert the dvd or mount dvd disk image in computer having win7, lets it is H drive.
    2. Insert pen drive and format pen drive with ntfs…suppose it is I drive.
    3. open cmd with run as administrator and type H: and enter then type Cd boot then enter and then bootsect.exe/NT60 I: and enter.
    4. open h drive and copy all of contents and paste in I drive. Thats it.

  196. prasad vs says

    hallow brother i have a 10″ atom prosser dell laptop.can i install windows 7 on my system pls reply is this possible

  197. Meena says

    I am getting this error ‘could not map drive partitions to the associated volume device objects access is denied’ after BOOTSECT.EXE /NT60 H:

    Please help!!

  198. martin says

    @rete: Thank you so much, sir. I wouldn’t guess the problem was in the fact that I used usb3.0 port.

  199. akanksha says

    i have done till assign and exit command on cmd..after that i dont have CD to install windows 7..I have the copy windows 7 CD in my D drive. So how can i install from there?
    inspite of writing D: CD BOOT wat else i have to write?
    i want to boot my computer through the copy of Windows 7 CD..whether i have to put that copy in pen drive or what?
    Please reply soon..

  200. ray says

    Cant get it in ntfs,….only fat32 is working should that be a problem?
    using windows 7 64 bits and a 16 gb usb stick.

  201. waheed says

    awsome man .. i m going to try it , i dont know whether it works or not but the way u instructed and guided us .. it was really great thanks

  202. Ryotaro says

    Not an easy task to do but it worked! Thanks for this I learned something new. Btw, used a Sandisk Cruzer Pop 8GB. 😀

  203. Idress says

    In the last step, is it important to copy the files from the cd room drive or we can copy from any other drives as well?

  204. don says

    one problem is come in win7 all step is work but in last when you type the command bootsect.exe /nt60 and drive letter then its not work one natification comes(your drive is denaid)please tell me what is the problem

  205. imraj says

    pen drive does not formulated and can not b opened …window does not format it what should i do … to regain my previous pen-drive

  206. Paul says

    *** UPDATE: Tried with Kingston Thumbdrive, same error.
    Conclusion … for step 2, you MUST

    >Start menu
    >All programs
    >Accessories (right click on Command Prompt and select “Run as administrator”)

  207. Paul says

    Followed the guide completely. Very simple and easy to use. My issues comes at the very end. I get an error just before copying the Windows 7 files. My error is:
    E:\boot>bootsect /nt60 G:
    Target volumes will be updated with BOOTMGR compatible bootcode.

    Could not map drive partitions to the associated volume device objects:
    Access is denied.


    I am actually trying to use an Secure Digital card in a USB adapter. I will try with a Kingston 4gb Thumbdrive and report back.

  208. John says

    Installing Windows 7 or Windows 8 on Lenovo x100e.

    The Lenovo notebook x100e doesn’t have a CD/DVD drive. Therefore you must install windows from a USB flash drive.

    Make a bootable USB using Windows 7 USB/DVD Download tool which also works fine for Windows 8.

    I did have the issue that my usb flash drive as bootable but my Lenovo x100e didn’t boot from the usb flash drive.
    Although I set it to “boot from usb” in the boot menu.
    After some trying I found out that the bootable USB flash drive must be formatted in FAT32 not NTFS. When your USB flash drive is in FAT32 then installing Windows 8 from a bootable USB is piece of cake.

    I hope that helps one or another!

  209. AJEET says


  210. Richard says


    You could use this tutorial but instead of using a disc you could open the iso with winrar or something like that….

    or you could mount it with daemon tools

  211. Jonathan says

    I made mistake. It actually works!!!! It’s installing as we speak. I am so happy I could kiss a toad!! You are BEST!!! Muuuaaaa 🙂

  212. Trollslayer says

    Works fine – as long as I read the instructions carefully!
    I had problems with a slow SD card but with a class 10 SD card it worked.

  213. Tampoo says

    Perfect !
    This was the easiest and shortest guide that I found over the web corresponding to this topic and it works with no errors.
    Thank you to the writer.

  214. arif6832 says

    I have a WinXP laptop, but its DVD ROM is not working. I need to install win7 through USB or any other means….

    Please help…

  215. ayush says

    Hey I can format my usb key to normal (that is just to store files) after this process, right? Or will it become a bootable drive forever?

  216. Usher says

    thank u so much 4 the info!
    I`d like to try it on my school`s machines
    its nice to have guys like u in the net 😀

  217. Raza says

    I just have one problem ,that my hard drive is 1 tb so it takes so long that i cannot format it. plz help

  218. crispiy says

    you need to type “F: CD BOOT”
    you typed it as “F:/ CD BOOT” which is wrong
    “F:?> CD BOOT” is wrong as well.
    good luck

  219. shedrick says

    Nearly 2000 comments, many say it works. my computer does not have a dvd drive and is not working well this is why i try to get help. i will soon get to try it, my only prayer is that it work for me as it did for others. thanks a lot in advance.

  220. Sabin says


    I did all steps , but i have two Problems!


    in BIOS are 3 types of boot usb



    When i reset the computer to install the windows
    Gives This Error:


    Please Help me .. My DVDROM dont work , and My Windows is very dirt


  221. Sid says

    You might want to publish the ANNOUNCEMENT at the beginning of the post, rather than at the very end, that a better method is available. I went through the whole thing (successfully) only to find in the end that there was an easier and much faster way…


  222. Marco Gracin says

    I’m fairly computer savvy… been restaging computers for a while… ever since Win3.11 in the early 90’s, prolly before the author was born. But still, I’m no expert, which is why I went looking for answers. This bonehead has the naïveté to claim his methods work 100%. Right. Sorry Mr 100%, but it doesn’t work 100%.

  223. Kevin says

    Dear Twaekwindows, the instructions appeared to have been working until I arrive to step 6. My DVD Drive is F; after I typed “F:\> CD BOOT” the command screen indicates that “The system cannot find the command specified.” My friend, do you have any suggestions regarding that issue?

  224. Biraj Sharma says

    Thanks a lot.Works perfectly. I have a question. Can I copy drivers and important softwares on the same usb drive so I can easily use them after installing Windows 7 as it has lots of free space left.


  225. Maxxim says

    This is an excellent guide, thank you so much!

    I think you should point out that this approach works around a major problem with the native Windows 7 USB Tool. The latter only works with USB drives identified as “removable”. However, a lot of USB hard disks are identified as non-removable due to the Removable Media Bit (RMB) not beeing set correctly. Your approach however works for both removable and non-removable USB devices, therefore it succeeds where the native tools fails.

    Many thanks again!

  226. Romo says

    Thanks for sharing the great tutorial…
    I,m running 32 bit windows 7, if i want to upgrade in 64 bit what process should i taken? anybody help? Thank you.

  227. ROMO says

    thanks for the great tutorial. if i want to make a bootable usb drive in 64 bit using 32 bit window. so what procedure should i do? please give me a suggestion. thak you…

  228. Joe says

    I am trying to install windows 7 on my desktop, when i try to boot the USB it says BOOTMGR is missing.. I followed the instructions step by step, can someone please help me fix this?

  229. Abdul Ghaffar Qazi says

    salman you must have at least an image file of windows8 on your hard drive, then you have to mount this image as a virtual dvd rom on your computer by downloading any free software like “magic-disk”. It means you may now continue without DVD rom.

  230. ak says

    Thanks for the guide. This is the most helpful tutorial I found.

    Just a few notes:
    – USB drive will only show up in DISKPART under Vista/7
    – If you’re making a 64-bit Windows Disk from a 32-bit OS, you need the 32-bit version of bootsect

  231. leftbowler says

    well i will start by saying my 3rd grade gr daughter could make a lighter bootable with these easy steps good job bud … now think you can help with this 1 ? sup password on thinkpad edge every thing was good until i wanted to change the bios . huh! i can see the bios i can get to it but cannot change it any suggestions? it cant be easy as the battery can it?

  232. Ijas says

    Dear Admin and friends,
    My USB device does not visible in LIST DISK. Can u somebody help me to solve this problem?

  233. ashok, rakesh says


  234. DPR says

    I got “BOOTMGR not found” msg in black screen at the time of booting by flashdrive after successfully completed all the step above what can I do?

  235. AMIT MAURYA says

    thanks a lot bro only ur method worked and it is so simple.thanks may god bless you:)keep up the good work….

  236. Arushraj says

    there is no any option for booting from USB in my BIOS system. CD Drive, HDD, Network, else nothing any option in my BIOS. Please tell me now how can I boot it from USB.

  237. Rina says

    I just want to say thank you! This is the third website I’ve tried and yours was just so easy to understand! The pictures, the bold text, it all put together a really nice picture for me. Again, thank you VERY much! ^^

  238. Milan says

    I maked usb boot disk with Win 7 step by step…no problem.
    Laptop HP Compaq 6735s tell me >BOOTMGR IS MISSING<, press
    Ctrl+Alt+Del to restart!
    What to do?

    Thank you!

  239. admin says

    @ Mufi
    It’s because of the corrupted installation (WIM) files. I suggest you check your Windows 7 ISO or DVD using a virtual machine first.

  240. mufi says

    I need some help here. I successfully booted my window’s 7 from my usb drive. I chose the language and the next step is this message: “Windows could not display the images available for installation”
    Could anyone help me?

  241. miradanhannah says

    hi. the text on my netbook suddenly missing. so how i’m gonna format it? can somebody help me to solve this problem? thank you..

  242. sn says

    i made usb bootable and when i install xp in laptop,after copying files ablue screen appeares n it tells dat run chkdsk /f facility and instalation cant proceed coj there may be sum virus in my pc or problem with hard drive

  243. Chaz says

    When I type “CLEAN” into Command Prompt, (after selecting “DISK 0” in my case, I get the message: “Virtual Disk Service error: Clean is not allowed on the disk containing the current boot, system, pagefile, crashdump or hibernation volume.”
    I’ve gone back and retried with two different USB drives, but it still won’t work and I get the same message.
    Could someone help me?

  244. roy says

    Update on Update Jan 11, 2012: If you find this guide difficult to follow, YOU ARE RETARDED AND SHOULD NOT GET ANYWHERE NEAR A COMPUTER

  245. jhj says

    It worked 100% for me on a Dell alienware M11x laptop which did not come with a built-in DVD drive. Thanks!

  246. josh says

    great guide 🙂 thanks for this
    you can also use the short terms

    SEL DIS X (X being the USB drive letter, seen in list disk command)
    SEL PAR 1

  247. Frank says

    Thanks very much, worked so well I was sitting there thinking “C’mon where’s the problems?”. Just two very minor points; add the QUICK parameter to the FORMAT command to speed it up; The BOOTSECT.EXE must match your existing OS, i.e. 32 or 64bit. Also the laptop I used the bootable USB drive on has a dead DVD drive so I used a second USB drive with the OS files stored on it.

  248. mirza says

    i was at step 4 when my pc got shut down (due power failure), but now my usb drive is stuck. i cant format it because when i try i get msg windows can not perform this task. below usb drive icon NTFS is written. please help

  249. Anthony says

    Thanks so much!! The bootsect.exe portion wasn’t working but then I realized that I didn’t run it as an administrator!

  250. Cor Bryant says

    What the hell? All these years and I’ve had to go through some janky procedures to do this — some of which didn’t work. Good job man! This >IS< the easiest way to achive a bootable installation. Good write up.

    And for those of you trying this with XP. It will not work, not this way.

    Another thing I did was used the 'QUICK' option after the format command. It takes quite awhile to format a 16GB flash drive and I don't think there is any real reason to do a full format when you just cleaned the drive.

  251. Yang Li says

    This is a awesome post. I was trying to reinstall Windows 7 on my laptop Lenovo X61 which has no CD drive. This post really saved my life.

    Thank you very much.

  252. Ryo says

    On the format, you can do a quick format by adding quick to the format command.


    No need to wait an hour to format a 8GB stick.

  253. viswanath sai says

    It was very nice, but i have small doubts here i hope u’ll clarify my doubts.
    1) Why do we need to use disk part, list disk and all that commands, i think it just converts the flash drive to NTFS file system, Why can’t we do it directly format it to NTFS either it may be quick or normal.
    2) Why do we use only NTFS file format here , Why can’t we use FAT or exFAT.
    3)I have tried this thing with XP but dis doesn’t work, any help how can do it ????

  254. trish says

    i have windows x32 and i want to install x64 and at step 8 i have problem and it says i should use x32 what should i do?

  255. Som says

    I did this even faster by changing the line;

    – FORMAT FS=NTFS, to

    Formatting takes quite a long time, so I’d recommend trying

  256. jabao_ron says

    On Windows XP, DISKPART doesn’t sees the USB device as a disk. So you cannot create the primary device. Take that into account when you try to do the procedure explained above.

  257. gtm says

    BOOTSECT.EXE/NT60 I: is not workin.
    error: bootsect.exe not recognised….

  258. Jim M says

    Could I use a downloaded version of Windows / if I don’t have DVD? What commands would I have to use? Thank you.

  259. nikola says

    Run CMD as administrator if you get this:

  260. Ertugrul says

    I have iso win7. I mount it with daemon tools, it appears as dvd rom on My Computer. So at last step am i going to just ctrl+a ctrl+c and ctrl+v to usb? Nothing more right for step 8?

  261. Mooe says

    Do you have to repeat the process if you switch the operative system’s files?
    For example; I made the USB bootable using a x86 version of Windows 8, but I want to switch to x64. Can I just switch the files without formatting or redoing everything?

  262. admin says

    Try to reconnect the USB and also make sure that your USB is appearing in Disk Management.

  263. neB26 says

    when I enter “list disk” it only shows disk 0 (hard drive)
    what do you think, it’s a problem with USB stick or PC.

  264. Karthik says

    You have find out the perfect way to resolve, such a kind of issues. Thanks for your status. We are expecting lot from you. You are really great…

  265. Shasiru says

    Yep, this is also working with windows 8.

    but if you could explain all the dos commands we’ll be so glad..

    thanks a lot for the share..

  266. Daniela says

    hi…my laptop doesn’t have a cd /dvd port 🙁
    and i can can install the new windows if the acctual one is 32 bit 🙁 and the one i want to install is 64 bit?
    can you help me please?:(

  267. Godfred Cruickshank says

    You are such a Genius…. keep up the good work!
    kindly hit me on facebook same name… we can work something. 😉

  268. bg says

    I’m writing this comment as an add-on or alternative to the main article here. The author of the article or anyone else can feel free to use anything in this comment. I don’t need credit for this comment, you may take it as free information.

    The author’s method for formatting the flash drive seems a bit complicated for the average user, mostly because of the heavy command prompt usage.

    To format your drive just right click your flash drive in My Computer (or just Computer on Windows Vista or later) and go to “Format…” instead of using DISKPART. The result will be the same. In fact, this entire article and be rewritten to use a single call to the command line, that command being:


    This is something that I’m sure many users would prefer to see, because graphical interfaces are much easier to use.

    Also, here is a very short summary for people using an ISO file instead of a DVD (some people might receive an ISO from their university, or purchase and download the ISO from Microsoft):

    1) Get a flash drive and, if it isn’t already, format it to NTFS. NTFS is required for this to work, and you’ll probably need at least a 4 GB flash drive.
    2) Open the contents of the Windows 7 or 8 ISO file and copy all files to your flash drive. PowerISO or Daemon Tools are two programs that can open an ISO.
    3) Run the following command in Command Prompt, replacing both “H” letters with your flash drive’s letter:

    If you run into problems with the above steps, remember it’s just a summary and it assumes you’ve already read the main article. I’m posting it to both potentially help users with ISO files, and to help people see the basic steps required. Even if you use a DVD instead of an ISO file, the above summary might be helpful, since only my 2nd step talks about copying files from an ISO.

  269. oregtolvaj says

    Gj we made a 99,9 MB pendrive from 4 gb..gj.. i cant start copy the contents to the USB flash drive…

  270. Praveen says

    Great man Thanks man its working but last command not working for me any way its installing

    Thanks a lot

  271. Jack says

    After using install win 7 from flashdisk, can i format flashdisk again to use as normal flashdisk ?

  272. neil says

    buddy i have tried this method 100s of time. each time it worked only difference is i used fat32 file system, which changes the last step.. but today it is not working at all. sop trying ur method now.. hope it works.. usb drive is not at all booting even after changing the boot priority…

  273. JohnH says

    Very nice tutorial.

    I didn’t read all the comments, so this may be a duplicate, but I might suggest that a quick format works just as well and cuts the time way down. (Somebody posted early on that a full format took 40 minutes. I also had to wait a looooong time.)

    Just add a space and the word “quick” after the format command. It will then look like:


    The % counter won’t increment upward, but the format should be finished in less than a minute.

  274. RUBAN says

    wen i enter bootsect.exe it shows like tis…wat to do?
    Target volumes will be updated with BOOTMGR compatible bootcode.

    Could not map drive partitions to the associated volume device objects:
    Access is denied.

  275. Jason says

    Prolly already been said. Thank you for these instructions. The DVD drive was killing my with a brand new computer. Just kept failing. These instructions worked perfectly for me.

  276. Robin says

    Hi. i am having problem with the bootsect. it says

    “This tool can only be run on systems booted using PC/AT Bios. This System was booted using EFI or some other firmware type”

    Can you advise how i can solve it? I have copied the files into my flash drive.


  277. Robin says

    Hi. i am having problem with the bootsect. it says “This tool can only be run on systems booted using
    was booted using EFI or some other firmware type.” Can you advise how i can solve it? I have copied the files into my flash drive.


  278. Jo says

    Thank you admin 🙂 Copy and paste (9.11) I understood, but nothing about ISO files (9.13) x-/

  279. admin says

    If you have an ISO file of Windows 7, use 7-zip or Winzip to extract. To extract, right-click on the ISO file, select 7-zip > Extract option to extract everything to your USB.

    And if you already have extracted files on your hard drive, simply copy all items and then paste them in USB drive.

  280. Jo says

    Dislike it when walkthroughs won’t take you to the very end.

    Here it leaves us hanging where it says:

    8. “Copy your Windows 7 or Windows 8 DVD contents to the USB flash drive”

    … and doesn’t explain how!

  281. Idress says

    By pressing the last code ( bootsect.exe /nt60 H:) it denies and I get this message ” Target volume will be updated with bootmng compatible bootcode.
    Could not map drive partiton to the associated volume device objects: access is denied .
    Can any body help me out and solve it?

  282. Asif Mahmood says

    Prior to following this guide, I was using win-8 RTM version, I followed the onscreen instructions and finally the result was a big SUCCESS!.

    Truly awesome guides to do the trick.

  283. donsity says

    Got Access Denied On the very last step
    Message says:
    Could not map drive partition to the associated volume device objects.

  284. The Monj says

    WOW fantastic, worked a treat with no problems what so ever ! this method has definately got me out the Sh*! and I cant thank you enough, super 🙂 thankyou

  285. admin says

    @ wirowi
    It seems one or more installation file(s) are corrupted. We suggest you try installing on a virtual machine to make sure that setup files aren’t corrupted.

  286. wirowi says

    I’m so sad. I’ve tried everything to install w7 on my desktop from my USB flash disk. It just doesn’t work. So, I completed all the stepts. I go to bios and make sure the USB is the first boot option. Then I enter windows 7 setup. I select language, time and date format and so on and it starts installing and at 70% in expanding windows files I get this error:
    ‘Windows cannot install required files. The file may be corrupt or missing. Make sure all files required for installation are available, and restart the installation. Error code: 0x80070570’.

    I tried installing from the same usb stick on my laptop and it doesn’t work there either, but the dvd(the exact one I made the usb flash after) boot with no problem. Guess I’ll just have to get a dvd-rw and install normaly from a dvd 🙁

  287. admin says

    @ MD Yusuf Khan
    Yes, you can create bootable USB even if you have setup files. In the last step, you need to copy all setup files to the USB instead from the DVD.

  288. Md yusuf khan says

    pls tell me that if i have no CD drive but i have the whole setup file in my system then how i make my pen drive as bootable… and one thing is that i don’t want to re partition my HD…

  289. Joey says

    Hello Admin! how will i use step 8? am i just going to open the content of dvd, copy all the content and send it to my usb stick? pls reply. Thnks.

  290. ken says


    i get this error when i ran ‘create partition primary’. my disk space is 3894 MB. it’s a 4GB USB thumbdrive. are there any other options ? thanks.

    There is insufficient free space to create a partition at the specified size and offset.
    Specify different size and offset values or don’t specify either to create the maximum sized partition.

  291. ANKUL AGARWAL says

    like u said bro it before getting into this site i also followed several guides but to no help…u r the man…it really saved me the pains..thanks a ton..wud like to keep in touch n updated…:):)kudos

  292. amarock says

    is it okay if i add other folder in the usb? bcoz i thought it will be a good idea if i can add all the required driver files into the usb ie; graphic card, soundcard, gaming mouse, etc..tq

  293. Anandhagiri says

    Superb!!!!!!!!!! In my personnel laptop DVD ROM is not working. I tried this option “Boot from USB” i could able to install windows 7. Really awesome tips Thanks a lot!!!!!!!!


  294. best site says

    Your style is so unique in comparison to other people I
    have read stuff from. Many thanks for posting when you’ve got the opportunity, Guess I’ll just bookmark this site.

  295. Beau says

    I followed your instructions to the T but now when I try to put the ISO file on the SD card it says Access Denied: Read Only. but I cannot change the permission and now I have a useless card…

  296. admin says

    @ Israels
    You need to install Windows 7 64-bit all over again by formatting your current 32-bit installation as 32-bit doesn’t support 4GB of RAM.

  297. Israels says

    Hi wonderful Admin…nice work…i have a problem…i have an Acer Core i7, 4GB RAM. Windows 7 64bit and its a kind of mini with no in-built DVD drive….i formated it wit my Bootable USB and i’m getting 4GB RAM (2.61 Usable) 32bit……pls how do i change it to back to 64bits…..thanks

  298. Israels says

    Hi wonderful Admin…nice work…i have a problem…i have an Acer Core i7, 4GB RAM and its a kind of mini with no in-built DVD drive….i formated it wit my Bootable USB and i’m getting 4GB RAM (2.61 Usable) 32bit……pls how do i change it to 64bits…..thanks

  299. Washington says

    “5. Next insert your Windows7/Windows 8 DVD into the optical drive”

    Man, sorry, but if I had an Windows DVD I wouldn’t need this guide, would I??
    I have an ISO in my HDD and I don’t wanna burn it in DVD. How do I install?

  300. priyanka says

    After changing boot sequence to USB drive and exiting it’s saying BOOTMGR is missing.. now what to do?

  301. Syed says

    Hello. I dont have a windows installation disc, but i have downloaded the files onto my computer. Now i need to get it to boot from the flash drive but i dont have the bootsect file though. i have downloaded that too in C:\Users\SDAJ\Downloads
    Now what should i do to load it?

  302. wheatthlns says

    Is there any workaround to the “Must be in 64 bit mode to make a boot-usb of 64 bit ISO”? The official windows USB maker does not seem to want to recognize my WD Passport. Am looking to install official Windows 8 copy.

  303. lokster says

    for those people with copying the autorun problem, turn off your Antivirus and copy it to the USB again, normally its the antivirus preventing you from copying. Enjoy

    Works on windows 8 and 7 ISO x64

  304. steve says

    @Chetan, I hope you are not talking a physical HDD ‘D’ drive you partitioned and formatted. If so you lost all the data on it.

    The instructions clearly state to substitute the flash drive number you see using List Disk then Select Disk. If you entered your ‘D’ drive then all is lost.

  305. Chetan says

    Hey ….!
    Thnx for this method … i got upto step 7
    “but at step 7 i got an errro:
    Could not map drive partitions to the associated volume device objects:
    Access is denied.”

    & as i enetred assign in diskpart … it removed my existing ‘D’ drive & now i cant get access to my D volume
    in disk manager it shows an healthy empty drive please tel me how i can get to that drive back ……. !!!! thank you .

  306. Kiran says

    after bootsect.exe/nt60 H:i get this
    target volumes will be updated with boot mgr compatability boot code.

    could not map drive partitions to the associated volume device objects: access is denied

    i use windows 7 ….

  307. Maz says

    My host OS is windows 7 and I have installed VMware for some R&D purpose but unable to install in VMware.

    Install media is not detect at the initial step. need help

  308. Arunkumar N says

    Thank u so much..bootsect /nt60 H: didn’t work for me..but the device became bootable.

  309. Balsimran says

    Thank you so much! My dad’s computer wouldn’t read a cd so i used this to install Windows 7! Thanks again and I will spread this guide to many other people!

  310. jone says

    If boot wont startup try program galled YUMI(Your Universal Multiboot Installer). YUMI is very ease to use. Install it and add isofile and reformat usb stick with yumi program.

    Yumi work in xp, win7 in linux, and 32 and 64 bit computers. It builds MBR etc.

    I did like this page and it worked on my 64 bit computer, but not in my 32 bit computer. In my 32 bit computer freese on startup and get message “press control alt del”.

    With yumi it worked. google “yumi”.

  311. Greg says

    This guide isn’t fool proof. I can’t install autorun to my flash drive it wont allow me. Thanks for nothing.

  312. R. says

    I’ve got a problem and i do not understand why.It is happenning in the step 7 after we just have typed BOOTSECT.EXE /NT60 H: and click enter i get this message ”could not map drive partitions to the associated volume device objects:access is denied”
    if anyone knows the solution it will hepl me

  313. SonyHren says

    I get an error that I’m missing drivers.
    Can somebody please help me because I’m really stuck here for days now.

  314. IBRAHIM says

    YOU ROCK thaaaaaaaaaaaaaaaaaank youu YOUR POST has just fixed my damn problem


  315. Josh Rune says

    You forgot to mention that win8 64bit bootsect doesn’t work in any x86 OSs. I have to boot a virtual machine in 64 bit mode and run bootsect there.

  316. Jarvis says

    hi there:

    your tutorial was awesome thanks and great work! 😀 ;P

    can you tell me how to install mac osx snow leopard on regular windows based computer.

    hopin u’ll help

    thanks in advance

  317. how to use fiverr says

    Very soon this website will be famous amid all blogging viewers,
    due to it’s pleasant articles

  318. Sahl says

    brilliant tutorial, very descriptive and I can confirm working , installed via USB stick on my Asus N61JV laptop

  319. Steve says

    the command prompt tells me that the path is not designated when I try to D: CD BOOT -> CD BOOT

  320. Tanmay says

    Can i keep win 8 consumer preview an windows 8 developer preview to gather on a same pen drive

  321. steve says


    You can also try the way given in comment #1437 if the boot information is in the main directory of your DVD.

  322. steve says

    @idress, is ‘d’ your dvd drive letter or is something else? The ‘d’ is just an example.
    Plus the DVD you are using must have a Boot directory on it. If not, the boot images may be in the root directory of the DVD.

  323. idress says

    plz help me and give me my answer,when I type d: cd boot and after that cd boot ,it says the system can not fine the specified path? what should I do?waiting,,,,,,,,,,,,

  324. steve says


    You can’t. Have to get a bigger usb flash drive. Instructions state 4gb minimum. They are quite cheap now.

  325. Idress says

    After the format process is completed ,it does not go according to the commands,after that if you can explain that!@

  326. Cameron Peet says

    Hey I had same problem with the list disk stuff you need to get a program that turns your “Removable” drives into a local drive, i used this thing called himati microdrive, all u have to do is a few steps like getting ur usb id and then paste it into a section of code, then lastlyy you update your usb drives with the .inf file that u edited and presto!! ur “removable” drive is now local 🙂

  327. Devasish says

    ..why to do all this just download and install power iso works every where xp/vista/win7.:)

  328. Lioninwinter says

    Thank you so much for this guide – it was just what I needed. CLear, simple, and thescreenshots made everythign so much easier. Props to you and thank you for taking the time to publish it and saving me time in the process. Good job man.

  329. Amarnath says

    i am trying to install windows 8. i dont ve a dvd drive so i try to install via pendrive i tried the above steps i had some doubts y i need to mention the CD boot, since my drive s not working i have to mention usb drive alone know ie my usb drive is j

  330. admin says

    @ Greg
    If you have an image file (.ISO), first mount it using Virtual Clone Drive (free) software and then use the drive letter of the new virtual drive in commands.

  331. VIVEK says

    i got the steps..
    but i want 1 more help..
    Plzzzz tell me
    a link for windows 7 64 bit…

  332. Aung Naing Linn says

    Thanks for your post. i tested your method. finally, i can do successfully. 🙂 May you be free from all danger.
    i will see and learn your other posts.

  333. admin says

    @ Shubham
    Make sure that you are typing the right USB and your DVD/virtual drive’s drive letter in the command.

  334. SHubham says

    hello sir after step 6 it says “the system cannot find the apath sepcified “…
    please help me out of this !!!!

  335. Gaby says

    Oh thanks bro. that might be the problem which i was not aware of, i will try wiping it off and see if it works then ty ^^

  336. steve says

    @Gaby, you can not install 64-bit Windows on top of 32-bit. You must completely wipe the hard drive first (format).

  337. Gaby says

    Oh no sir, i am not trying to install windows 7 on my USB, what i am trying to do is, install windows 7 64bit from Usb to my Hard drive. I am currently running Windows 7 32 bit on my hard drive.
    I also tried to use the software which is being given here to download from microsoft, after all the steps it all also stated that your USB was succesfully turned into a bootable flash USB, but when i try to boot it doesnt works, and when i try to run the setup from USB to install it on my hard disk, it does not let me do it.

    My current windows : Win 7 32 bit
    What i wanna do is : Install win 7 64 bit , from USb to my hard disk.
    Problem is: its not letting me, even after following all the steps.
    All the steps followed right with thorough confirmation: YES!
    Please help me. i hope i am clear to u know, for what the problem is, i can provide you a screen shot, if you desire. ty

  338. admin says

    @ Perform a full format (and not quick format) to restore your USB to the original state.

  339. hvrio says


    Asus EEE PC 1015PX
    8GB Flash Drive
    Windows 7 Ultimate

  340. Gaby says

    and when i try to manually run the setup when logged in, it says >> ” “This version of J:\boot>BOOTSECT /NT60 E: is not compatible with this version of Windows. Check your system information to see whether you need a x86 (32-bit) or x64 (64-bit) version of the program.” error.

  341. Gaby says

    Hello there, first of all thanks for the awesome guide :)i did everything u said step by step, i am currently running Win 7 32 bit, and i did the procedure you stated on a USB Flash drive , TO install Windows 7 x64 bit , everything worked like a charm, the only problem is , when i try to restart my computer, i am unable to boot from my usb flash drive. even thought its been set to primary priority.
    My Mobo does supports, USE BOOT and still i am unable to do it, the name of my Mobo is ” Asus P7H55D-M Pro “.

    More Info : I downloaded a x64 bit win 7 from torrent which works, it was a ISO file, so i extracted it, and copied the files to my USB Flash drive, and i did copy all of my files as well.
    Can you help me with what could be the problem? or a Solution 🙂


  342. gostf says

    … again, why would you take the effort to do the via-USB-installation if you have an optical drive.

  343. sander says

    Thanks for the guide, but my usb flash drive isnt working after that.. help please 🙂 ?

  344. revarcz says

    Dear admin,

    I have a netbook Toshiba NB505. The problem was that it has a system corruption where it does not able to boot to the desktop. At first I was trying to restore the OS using the built in recovery and it wasn’t successful. I then tried using the flash drive I made using your guide and still unsuccessful. What do you think would be the problem?

  345. revarcz says

    Thanks, I got it right… i have executed the commands as described in your guide and copy the contents of the Windows 7 DVD like I said and it did works… Again, thanks for the successful guide….

  346. admin says

    @ Revarcz
    You can copy without the help of Command Prompt as well but make sure you execute all other commands as described in the guide.

  347. revarcz says

    I didn’t quite understand the part where you have to copy the contents of the Windows 7 to the USB drive. Is it has to be done using the command or we drag straight out from the disc to the USB drive? Please help….

  348. mitch says

    Work’s also on my version of windows 8 had to reset it to 7 and you guide helpt me thanks 🙂

  349. Javier says

    Dear Admin,
    sorry, I did not know I had to exit diskpart. I have done now and everything has followed alright.
    thanks again for your work and patiente

  350. Javier says

    Dear Admin,
    thanks very much for your answer. Yes, I understand now.
    I have a question, though. In step 6, I am in diskpart, and when I type
    [DVD Unit]: CD BOOT
    it only lists all possible diskpart commands. I have mounted the Win7 Iso with UltraIso, and checked the drive letter, but diskpart does not change its prompt to c:\windows\system 32 like in the image you show.
    Can you advise?

  351. admin says

    You can mouse the ISO file using VirtualClone Drive (free). When you mount the ISO file, you will see another DVD drive in the Explorer with a drive letter. Let me know if you need more info on this.

  352. Javier says

    Thanks very much for your guide. I would like to ask further: how do you load the Win7 DVD when it is an ISO file in your Hard drive?
    Someone mentioned it above, but I dont fully understand,

  353. MD. ELIAS HOSSAIN says

    Target volumes will be updated with BOOTMGR compatible bootcode
    could not map drive I: to an associated volume device object.

    where I is my usb pendrive.

    Until this step all are ok. can you please tell me the next step of this procedure

  354. chucles says

    This is an awesome guide. Followed each step and worked like a charm. Hard drive crashed and the DVD drive that is hardly ever used failed to work!

  355. browse around this says

    Awesome! Its in fact remarkable article, I have got much clear idea
    regarding from this post.

  356. Markie says

    Awesome job you guys!! My HDD crashed. My ODD (optical disc drive) failed to work… and with your post, I was able to grab a friend’s notebook, created a USB installer of Windows 7!!! My thanks to the team!!

  357. Sanjib Halder says

    i tried this but when i try to boot pc or laptop from my pendrive it shows that “there is a problem occurred because of changing or replacing any hardware. try to start the pc with boot cd and repaire the bootfile.”
    this msg shows for every system.
    what shout i do or is someting missing when i tried to set the usb? plz help me

  358. TheGuru says

    For all you people who get Error while trying to install, try taking out one of your ram slots as sometimes windows 7 doesnt install whilst both DIMM’s are populated.. sounds silly but it works on most occasions.. Also when installing windows 7 on a laptop or pc with 2 hard drives – take the secondary hard drive out first because win7 will install the MBR record not on the primary but on the secondary. Hope this helps…

  359. Simone says

    for the problem:
    “Could not map drive partitions to the associated volume
    device objects: Access is denied.”
    You have to run cmd.exe as Administrator, then execute the istructions

  360. Da Phault says

    What is wrong with most of you people? While there is no such thing as a dumb question, that doesn’t mean you should challenge that expression. Would it kill you to at least try to do a little research before posting? Damn, people.

  361. Victor says

    Dude, your instructions are very easy to follow and 100% spot on! Thanks for this great and easy instructions.

  362. Seeb says

    @Maroon. or maybe you need to change your bios back to booting from hdd instead of usb drive.

  363. Seeb says

    @Maroon. What do you mean, “other PC”. Did you accidently copy over the bootmgr files from your other computers hard drive to the flash drive? Maybe put those files back.??

  364. Seeb says

    Amazing guide! Thank you so much for preparing such a well guided instruction page. I really needed help installing Windows 7 without a DVD drive and this was very helpful.

    I mean cmon now, who really even uses discs anymore? lol


  365. karen says

    Hi! I tried following your guide and at first it’s working good but after the partitioning the next step which is the “Load Drivers” part, it can’t detect my drivers, I’ve tried selecting the files on the USB drive but still not working. I hope u could help me out on this. Thanks!

  366. MAROON says

    i tried all the steps and all goes well, but when i tried to boot on the other Pc,

    a message appears:

    BOOTMGR is missing
    press ctrl + alt+ delete to restart.

    i restart it but same problem …any body can help please?????? thanks

  367. techgal says

    Awesome. Worked great. Up to this point was trying to get an Acer Aspire One netbook to install a fresh version of Win7 (killing XP). It doesn’t have a internal CD, so using external Sony DVD drive. Kept getting a DVD missing driver error with the install disk. Created the USB install per your directions (from the same DVD I was using to install from external) and it breezed right by that missing driver issue.

    One note – when it goes to restart the Windows installation after the fourth step, you need to remove the USB stick from the computer, else it will try to boot again from it and it looks like it wants to start the installation again. If it does that to you, just turn off the machine, pull the stick and re-start. Windows 7 install will pick up where it left off.

    Terrific, concise directions! Thanks more than I can say!

  368. admin says

    I believe you have an ISO copy of Windows 7 on your netbook. If so, please Virtual Clone Drive software to mount the ISO file as a DVD and then follow the same steps.

  369. MATT says

    hey i got all the steps completed to format my usb until step 5. but im using a netbook with no optical drive. i have the windows 7 files on my computer via torrent. Is there any other steps in order for my usb to be able to boot windows 7. or is it still going to be able with just the steps ive taken (steps 1-4). thanks

  370. aiden says

    the bootsect thing didnt work if its in a folder called boot so do this command instead

    cd D:boot
    then do the bootsect command

  371. cipan says

    for those who are using 32bit(x86) system and would like to install to do this step for win7 64bit, you need to be in a 64bit system to perform the bootsect /nt60 command. else you will received “This version of E:\boot>BOOTSECT /NT60 E: is not compatible with this version of Windows. Check your system information to see whether you need a x86 (32-bit) or x64 (64-bit) version of the program.” error.

  372. karthik says

    i got dat error… i tried dat without admin rights…..thanks for ur help

  373. karthik says

    hi…. i followed all the steps… but i m not able to do the BOOTMGR part. I have my installation files in my hard disk as a folder not in cd/iso file. below is the error i got…

    H:\windows 7 setup\BOOT>BOOTSECT.EXE /NT60 J:
    Target volumes will be updated with BOOTMGR compatible bootcode.

    Could not map drive partitions to the associated volume device objects:
    Access is denied.

    H:\windows 7 setup\BOOT>

    please help me in this…

  374. cody says

    what do you do if when you type in the bootsect.exe /nt60 H: and then the computer says ” could not map drive partitions to the associated volume device objects: Access is denied.” This what I keep getting

  375. Anubis says

    Thanx “tweakwindows”!!!… a lot!!!

    @Windows 7 USB Instal
    quicker?? i guess not, it takes more time to prepare the disk…

  376. trevor says

    What about if I have 2 DVD’s to copy onto my USB pen drive? Are the commands the same? Do I simply remove one DVD and proceed to copy the second one onto the pen drive? HELP PLEASE!!!!


  377. Guest says

    ok so if u dont have a Win 7 cd and u have a iso file mount it with PowerISO now have a dirve letter then fallow the steps

    to do the copy and past part go to myComputer
    find the drive u mountd right click on it then click open then copy and past to the usb flash drive

  378. Rachit says

    well i have used a simpler way:-

    format a 4GB USB to NTFS file system and then copy the contents of windows 7 installation disk to pendrive.
    Restart your computer and press F12 for boot menu.
    last select your USB drive in the list and press enter.
    Windows 7 installation begins.

    i have tested it on 7 not 8.

  379. Dave \W/ says

    Thanks great for great fix. It used to be much easier to make a ‘disk’ bootable. I will leave this drive as is permanently for future problems.

  380. Xo3e says

    For the format part since i know it takes a long time to do the full format, heres is the quicker way: FORMAT QUICK FS=NTFS. I don’t know why it says it takes a few seconds when on low specced machines it takes a good hour.

  381. Monzer says

    Hey working good with windows8 i tried it on Ubuntu its not working anyway is formating my usb will get it to it first condition ?

  382. Kevin says

    Works flawless when I used step #437
    windows ultimate
    ssd hdd
    gigabbyte mobo usb3
    core i7
    4gb memory

  383. tEEJAN says

    I just wanted to ask what if I don’t have any CD/DVD drive attach to my computer, is there any chances to proceed step 5->9 in order for me to continue installing using USB? any advice would be help..T_T

  384. ololade says it working on d 7th round wen I ran command prompt as admin. My Problem However is that after the computer restarts during the final stage of the installation should I remove the USB or leave it there???? Have been struck here since yesterday.

  385. raj says

    i have windows 7 setup on my drive d not on dvd…i have done first 4 steps but how can i do step 5,6,7,8….?
    thanks..please help me..

  386. Marko del banana says

    Hi! Thanks a lot! Gr8 & simple manual!

    — Special note —

    When you try to run bootsect.exe from win7-32bit PC, to create bootusb of win7-64bit, it’s said that you can’t run it, due to some incompatibility of 64bit boot disk. I use 64bit PC to overrun this problem. Beware! 🙂

    — End of special note —

  387. jay says

    the step format fs=ntfs is working for much time. it took 1 hour 1hr for 35% format. i am using dell inspiron with i3 processor and win7 as os

  388. steve says

    Matt, your simplified steps work perfect, at least for Win7. Thanks!

    Just have to make sure the media you are copying already has the boot manager files in the root directory.

  389. Matt says

    This does work, but there are steps in here that are not needed and there is a method in which you can use any Windows OS.

    Here are the follwing commands, this 100% works and is alot easier.

    Insert flash drive.
    Run cmd as administrator

    In CMD type ;

    SELECT DISK X (X being the USB drive letter, seen in list disk command)

    your drive is now ready to use, simply copy the contents of your instalation media, or extract an iso file to the usb drive itself. * make sure on the target pc you have USB drive as 1st boot device and this will work for any windows install.

  390. Lupe says

    On step 4 once you select disk 1 and enter ‘clean’ in the command prompt. everything on disk one will be erased correct. Can you get anything back that gets erased?

  391. admin says

    Yes, you need do a clean install of Windows 7 64-bit and then install all drivers and software.

  392. shaan23 says

    hello, admin, ok my system has been running on 32-bit,Windows 7 Home Premium, 2gb RAM, which i want to upgrade to possibly 8gb, so based on my research 32-bit(MAX.3.5GB) doesn’t actually utilize all of ehm, this leaves me to upgrade to 64-bit, could i? if possible, then do i need to separately install all the drivers & stuff by myself, or is it when i install the windows Ultimate 64, has all the drivers, except all the software of course that i need to install form scratch, i don’t know much about drivers, 🙁

  393. C. K. says

    Thank you, it works like a charm! One question though.
    Can I add an extra folder with some irrelevant files?
    For example, can I add a folder with pictures etc.?
    Has anyone tried it?
    Thank you.

  394. geoffrey says

    hey thanks for the guide but i just had a problem with step 7
    i didnt get the exact message that appeared i got this

    Drive E: maps to volume \\?\volume{4cefea49-42b9-11e1-b384-806e6f6e6963}.
    This volume does not appear to connect to any disk partitions. Volume bootcode is always unused in the absence of associated partitions.

    what should i do?

  395. SAYR says


  396. admin says

    @ Navin
    Performing a full format should bring back the USB drive to normal state.

  397. Dinesh Raja says

    HI,i have installed backtrack5 R2 (64-bit)linux os in my hard disk as “side by side”along with my windows7 now i want to uninstall bactrack from my hard disk..but i dont know in which block it has been installed…but among my 5 partitions 2 partitions F: and H: some total of 20 GB is those drives i am able to see an file bootsqm Video CD movie file in both F:&H: drives..please give complete step by step procedure to uninstall backtrack from my hard disk..

  398. Sreeram says

    Hi all very good guide finally i successfully installed

    but i spent time in problem-loop with command
    with error message of
    even i am in admin accounte
    only thing i scuessed after
    right click on cmd.exe
    select RUN AS ADMIN

    thanks for this guide

  399. Windows 7 USB Instal says

    Thanks for the great tutorial. I would definitely give it a try as I think its much easier and quicker than using Windows 7 DVD.

  400. Nero says

    Thank you for this! Everything works smoothly. I just hope that you can format the usb faster. Cheers!

  401. Carlos says


    First of all, this tutorial is great and I just loved it!

    Second of all, I was wondering if it’s possible to use this method with windows XP? I haven’t been able to so far, I’ve tried formatting with ntfs and using /nt60 with bootsect, and tried formatting with fat and using /nt52 with bootsect, but when i try to boot it keeps saying either bootmgr or ntldr is missing, am I doing something wrong?


  402. adi says


    i tried the way you listed on this webpage but when i go to install the os from the pendrive it says BOOTMCG not found or missing or something like that. i tried each and every step . please help me its iregunt. i think it might be late if you answer it afterwards but still i need a solution.

    thank you in advance

  403. echenze says

    I have written extensively about this and I can confirm that the above method works 100%.

  404. Ahmed Yahia Sebeka says

    Thanks so much for these awesome information
    i tried this way and it really works with me when i was running windows seven

    but if i have running windows xp list disk dose not appear disk 1 🙁

    so is any other method to make a windows 7 bootable usb bt with running xp system ??

  405. Kai says

    This is by far the best guide I’ve read. It has simple yet detailed explanation, but the “formatting might take a few seconds” part.. makes me mad, I am at 10% right now.. and its already been 5 minutes.. damn USB. Anyway, I will post again when I get to try it out.

  406. admin says

    Use a free tool named Windows Bootable Image Creator. Google it. It’s free and does the job for you.

  407. Krish says

    Very useful guidance indeed but I have a win8 OS file extracted from image and I want to reconvert that extracted file to bootable image which could be burnt in the DVD. As I lost the image file.. Is there any mechanism to do so?

    I need to format my Computer soon… Please RSVP this post.

  408. listoss says

    Well if you run cmd from the run box

    ctr + shift + enter

    doesn’t seem to work. your

    bootsect.exe /nt60 g:

    comand would be denied as admin so kindly run you ctr+shift+enter after typing cmd from the search programs text box. thanks

  409. Kael says

    This procedure worked perfectly. The key is to follow the instructions exactly. No skipping. Thanks very much.

  410. Vadim says

    Is that possible to install windows 7 on usb,because windows during the installation not letting me to choose to install to external location like another usb ?

  411. MissMaru says

    I’m having a small issue with the guide, my laptop restarted overnight after “format fs=ntfs”, but before “assign”, and if i redo the steps now he will not select partition 1 anymore even though it is in the partition list.

    I tried reformatting the USB through windows and redo all from the start, but it seems the partition is still there, and so i cannot create partition primary again, cause there’s not enough space.

    Is there any way around this or should i find a different USB?

  412. gerald says

    good day!
    please help! i did the first and second step, but it seems that my removable 8 gig doesnt appear on the list disk command…. what should i do with this…..

  413. admin says

    Just extract the ISO file contents using WinRAR, WinZip or 7-Zip software to the USB.

  414. Liam says

    I have a simplistic question. how is the ISO file copied over to the USB? is it simply drag & drop or use the command prompt to copy it? could you please outline these steps. everything went fine upto this point.
    Thank you for this post, I know it will work for me and bring my Toshiba back to life again.

  415. bhargav says

    i understood but not proper…. so can u make a video and upload in youtube?
    i have windows 8 in my usb { image file } so i am not getting idea to install it so wt to do….. please help me…..

  416. James says


    That error means something is trying to format the drive already. Either wait until it is done or reboot and try again.

    It also helps(is quicker) to use the command:

    That command does a quick format which takes significantly less time.

    Decompress the iso file in a folder on your C Drive, so the directory will be C:\Win7\(winrar will do this) and then instead of :
    cd boot

    Run this:C:\Win7\Boot\bootsect.exe H:(where H: is your drive letter for the USB)

  417. VIJAY says

    I have tried this upto 4 step,but iam getting error i withdraw my plan to install os from usb.and when i tried to format the usb it was showinng the error that ‘windows cannot format the drive’.please help me in formatting my usb .it very important for me to have my usb please help me.

  418. Andy says

    Hi there,
    Step 4, FORMAT FS=NTFS
    i get this error ‘ a concurrent second call is made on an object before the first is completed’

    i have used your guide many times before and it has always worked. could anyone please help with this error?
    Thanks heaps.

  419. sevs says

    Umm… Is there any alternative to step 5? I don’t have my OS on a disk, neither do I have any disk drive on my laptop. I have the OS as an ISO file on my computer. 🙂

  420. saroj kumar says

    you have said to insert windows7/8 dvd into optical drive, but i don’t have that cd rather i have those files in my hard disk. so how to make it?????

  421. TANGO says

    i got an error after this command:
    bootsect.exe /nt60 f:
    Target volumes will be updated with BOOTMGR compatible bootcode.

    Could not map drive partitions to the associated volume device objects:
    Access is denied

  422. davd says

    dude…if I were a chick I’d bang ya….this worked like a charm..buddy had a laptop that had vista on it that went corrupt…I could boot to a Winxp disk every time but NOT Win 7, tried multiple disks…..??….followed your instructions and it installed from my flash no problem…3 1/2 years later and this thread is still getting the love…finally a well written tutorial on this subject…props brother

  423. Rajey says

    Hey thanks dear! u really solve my problem. I’ll love to try this soon, I hope it work properly.

  424. Xeeshan says

    In the list disk step,I can’t see my USB drive. What’s wrong with it? (My Operating System is XP.)
    tell me hurry up

  425. suyogya says

    my command prompt shows 100% completed (format step)and then it doesnt says that diskpart successfully formatted volume and i cant type commands any more.please help sir

  426. Emma says

    thanks for the help.what about returning the flash to the normal working i.e the way it was before before putting on that OS?

  427. Radhakrishnan says

    I have tried what u posted. i had problem that after LIST DISK command, mine pen drive disk is not shown i mean it reports only hard disk. whats wrong in this… can u please help me

  428. Nano says

    I have done all but i choose my virtual drive as optical and i coppied files from it there is no problem but my sistem when i choose that i want to boot from my flash detects some problem on flash,btw bios is detecting it only as hdd and dont say me just use your optical drive bcs its complicated so if there is anyone who knows how to solve this yust reply. CHeers

  429. D. Vicente says

    Cristal Clear,
    I believe you could improve the article adding a description regarding how to mount a dvd virtually.

    cheers 😉
    and tks.

  430. hemraj says

    can i download win 7 ultimate from net, if yes share link,
    n can i further copy it (as in step 8)in booting pendrive ??
    plz reply soon..

  431. PB says

    the installation started but when the netbook restarts the installation starts again.. please help..

  432. Pepijn says

    Start the command prompt with administrator rights.
    That fixed the problem on my PC.

  433. Jeroen says

    Wow the extra step described here @ 6 and 7 was REALLY necessary to got my USB working otherwise I kept getting these annoying “No Device Driver Error” error.
    Was installing Windows 2008 server.

    THANKS MAN!!!!

    Why isnt Microsoft aware of this???

  434. Rex says

    Need help..

    F:\boot>BOOTSECT.EXE /NT60 g:
    Target volumes will be updated with BOOTMGR compatible bootcode.

    Could not map drive partitions to the associated volume device objects:
    Access is denied.

  435. juriel says

    what if the dvd content is at my desktop? everytime i write C: cd boot it goes to c:\windows\system32

  436. admin says


    I know Microsoft is the copyright holder of Windows and everything that comes with it. I have added watermark to prevent other spam sites from using my pictures.

  437. Max says

    You don’t mention ‘Microsoft Windows’ as a requirement – ie you have to already have a copy of Microsoft Windows installed on your computer in order even try this. I only have the iso files for Microsoft Windows 7 (and lang pack) – my computer is running Ubuntu (or no OS at all, of course).

  438. xnamkcor says

    Exactly what part of those pictures validates the use of the Copyright symbol? Do you own copyright on MS-Dos or Command Prompt? Do you own copyright on the process of formatting a drive?

    Did you know it is illegal to claim copyright of something you have no rights to?

  439. Justin says

    Honestly, I thought this absolutely amazing! I have searched high and low, most sites want to install software to apparently do what you instructed, while saving a minute or two, which also lead to an array of annoyances. Thank you for the input.

  440. rete says

    Thanks! Almost perfect guide. This works flawlessly, but all little boys and girls should be told that they are going to have driver instalation problems in very begining of w7 instalation if they use usb3 port instead usb 2. i had this gaind problem when i was using usb 3 port: A required CD/DVD drive device driver is missing. If you have a driver floppy disk, CD, DVD or USB flash drive, please insert it now. Note: If the Windows Installation media is in the Cd/DVD drive, you can safely remove it for this step” After i changed my usb stick to usb 3 port instalation works just fine. =)

  441. JT says


    Does your thumb drive or SD card have a ‘write protect’ switch on it? If not, chances are your card/drive is dead – most of the time the ability to write dies first, so you can read the contents of a drive, but not write to it. I would try another thumb drive to see if the problem persists across devices.

  442. Tekola says

    Hello Guys…How r u!
    When I make ready for My USB to be bootable I have type this code:
    But it replies a message like this…
    So what can I do….Thanx 4 Ur support…..

  443. deBoer says

    I see a lot of complaints, but I just want to say that it works perfect. I used it several times without any problems… and I’m not an IT-expert! Many thanks for this tutorial!

  444. rppp says

    It does not work in xp.
    yor title is misleading twat.
    i am using xp to create a bootable usb to install win7.

  445. PREET says

    leave that crazy method its really confused one

    to format a usb in NTFS
    just simply go to your device manager look out for your usb check its properties and go to policies tab than check the optimize for performance button after that format usb in NTFS. USING NORMAL FORMAT METHOD.


  446. DanielF says

    when i hit bootsect.exe /nt60 h: apears : could not map drive partitions to the associated volume device objects: access is denied

    can someone help me ?

  447. BarbaricFellow says

    THX for this clear list.I agree there are a lot of non working “manuals”on the net.I also tried the “Windows usb/dvd download tool” but it wont show my USB ext.hard disk in the drop down box.

    I have a question.

    I have a 1 TB USB ext. disk connected to my PC, but I also have a 1 TB hard disk inside the PC I am working on.
    And I can’t tell which is which using disk part.
    Both look identical showing as 931 GB disks with no empty space. It might be a stupid question but I really cant find the answer.

    How do I identify(command)hard disks inside disk part?

    THX in advance.

  448. says

    thanx admin for reply my question, but my problem is that :–how to make a bootable pendrive through command prompt as a dual partition(Dual windows xp & win 7).Send to me all commands of bootable pendrive to sort out this problem.

  449. frank says

    after I finished how can I restore my flash drive? I mean how can I make it to be a normal drive again instead of a booting disk?

  450. says

    thanx admin for reply my question, but my problem is that :-how to make a bootable pendrive through command prompt as a dual partition(Dual windows xp & win 7).Send to me all commands of bootable pendrive to sort out this problem.

  451. Keats says

    normally i use the WindowsPe(windows?????)and Wim Installer and Windows’s mirror like *.wim(such as install.wim),it’s so quickly and it doesn’t need reboot

    sorry,my english is so poor,i’m chinese

  452. says

    Plzzzzzzzzzzzzzzzzzzzzzz help me for how to make a bootable pendrive as dual partition(Dual windows:xp & win7) through USB flash drive in cmd

  453. Casper says

    Hi, great article, very helpfull!!! I had win xp on my pc at home and had trouble with cd rom as it didnt read any cds so i couldnt rewrite the windows. This guide solved my problem. The only thing id like to add is that it takes ages if you are formating a 64gb usb.

    Thanks very much!

  454. JAMES says

    Used this on a linux machine running Virtual Box – when I gave the FORMAT FS=NTSF command it gave a virtual disk manager error. Did the rest of the steps and exited DISKPART, then formatted the drive through windows explorer (NTSF quick format). Worked great. Thanks, the only way to install on my netbook.

  455. Matthew says

    An oversight by Microsoft ensured that I can’t use a 64bit install DVD on a 32bit system without booting from the DVD. Part of this oversight also prevented the DVDs from being able to boot AND their process for making a 64bit bootable flashdrive doesn’t work on a 32bit system. Your explanation for how to make a bootable flashdrive allowed my to use the 32bit bootsect.exe from the 32bit DVD to turn my nook into a bootable drive with the 64bit install software. My solution is jury-rig, but your explanation was a fine piece of work! Bravo!

  456. lokster says

    works! for sony viao on windows 64bit 😀 thank you! even though this article is a few years old still works on 2011 models!

  457. ujjwal says

    the method u explained worked properly..but when the windows installs and it shows windows restarting in 15 seconds then when restarts windows 7 load as usual and itz wriiten setup is updating registry then setup is starting services then completing installation tier shows an error…i think in that part pendrive doesn’t load files..!

  458. Julian Luna says

    Didn’t quite work, as I was using a netbook without CD case… the netbook was believing it was a CD, needed to boot the usb with usb booting with the universal usb installer… I don’t really know what happened, what I can guess is that the Netbook was believing to have a Cd inside since it started to ask me to insert a volume with the CD/DVD device’s drivers

  459. Arsh says

    nice tutorial my cd drive got damaged and i could not find any solution until i chked ur article it worked out for me….thanks for sharing this useful information

  460. VIVEK says

    thanx for the tutorial.
    I did as you mention in the tutorial but after 4th step
    i got message disk part sucessfully the volume
    but in cmd window its in disk part only
    when i punch cd boot command it show some help
    kindly help me

  461. Bill says

    I keep hitting this wall….

    “The system cannot execute the specified program.”

    I have nothing browsed the web, have nothing for troubleshooting. . .

  462. Martin says

    I have the same problem as Daryl over me here, I used exit to get of the “Diskpart” part of the guide.

    Now my External drive dossn’t have an assigned letter, It dossn’t let me assign a letter and it dossn’t show up in “My computer”

    I used a program called “USBDeview” and I could see that the External drive was infact still connected, but diddn’t have an assigned drive letter nor could i assign one.

    My question here I guess is: “How do i “Recover” the drive and after doing that do i have to format it and all again?”

    Because that took 5-6 hours on my 500gb drive on this shitty pc, and would just seem like a waste of time.
    Therefore if you cannot help me with this I’m off to go buy some fucking CD-R’s and do it the old way 😉

  463. stephanie says

    I have windows xp on my netbook and i would like to install windows 7 instead but I do not have a slot for CD’s since it is a netbook. Can I install windows 7 from a pen drive and do i first have to remove windows xp and then install windows vista?

  464. Daryl says

    i did on ‘exit’ as the last on step 4 and it did close the cmd. i am using virtual machine for win7 installer. as i go on step 6 it says ‘the system could not find the path specified’

    and my flash disk was wasted.. can my flash disk still be recovered? how?

  465. Mark Stewart says

    This is incorrect information for those using SSD SATA for the operatiing system (Dell 2012). Must use CLEAN ALL, not CLEAN. BTW: CLEAN ALL will not run from USB device, so unable to properly format SSD to install Windows. E.g., any registry problems will simply pick upo where they left off. Sorry folks. Win 8 may, “may” resolve.

  466. makabrys says

    Hi all.thank you very much i just hit the installation button all works fine,nice guide i will make a pdf from it ..thank you again

  467. Sam says


    i need help, quick i have managed to get up step 6. but when i type D:CD BOOT is just said incorrect function. i need to re-boot my computer asap PLEASE HELP!!!!!!!

  468. brittany says

    Here is a simple way to do it, no typing in cmd needed:

    Acquire Windows 7 .iso (do not unzip)

    Get an empty USB flash drive with 8GB+ space

    Format the drive to NTFS if it’s not already (Start -> Computer -> right click the drive -> Format… -> select NTFS, uncheck “quick format”)

    Google “Windows 7 USB/DVD Download Tool” and download from the first link, microsoft store

    Install, open and follow directions to make a bootable USB.

  469. Sonnya says

    I have a question…..if you can help me!!!!! I did all the steps, till the fifth….because now i`m using my mother`s computer, and I downloaded the windows….so… windows, is on the pc, not on a dvd…… what i have to write at the sixth step? cuz is not D: CD BOOT….and don`t wanna do smth to ruin my mother`s windows……
    Thank you….

  470. admin says

    @ Erik Karisson

    It’s simple. If you are using a flash drive (they are mostly small thumb drives with 4, 8, 16, or 32 GB capacity), then select USB FDD. FDD If you are using an external hard drive, select USB HDD.

  471. mn says

    Very good guide. Thanks. Just used it now.
    One thing to note, though. In diskpart I used “format fs=ntfs quick”.
    I have a 16gb stick and it took way too much to fully format it. A quick format took only a few seconds indeed.

  472. Erik Karlsson says

    I see atleast 3 people asking about which usb *** to use at boot sequence selection…
    I have the same problem
    I’ve got
    usb cd rom
    usb zip
    usb hdd
    usb fdd
    to choose from… none of the other atleast 3 people got any answer…

  473. Huzi says

    A little thing i ran into is that if it won’t boot from the USB (in my case my Acer Aspire One ZG5 just beeped constantly) try another usb slot. If anyone has a ZG5 (AOA-150) try the slot on the right closest to the front.

  474. Rafique says

    Hi Admin,

    I have the same issue as Daniel


    How can I resolved this?

  475. Carl says

    This works perfectly.
    I was pointed here from ##windows IRC
    Even though I use Linux as my main OS, I was easily able to follow this guide.

  476. admin says

    I am sorry if I confused you! Sorry to hear that you have lost some valuable data. You can try out some data recovery software.

  477. jessie barber says

    hey thanks man u fucking confused me with disk 1 i was supposed to put disk 2 and now ive lost a whole 500 gb hadd my only hdd is there any way to get this data compltey back as i had shitloads of movies n game iso’s n fmaily pictures tht cant be replaced ?????

  478. Daniel says

    I’ve followed this to the letter, but still can’t seem to get it to work. Upon trying to boot I get message “BOOTMGR IS MISSING, PRESS CTRL ALT DELETE TO RESTART” ….Updated bios, and went through the whole process again and got the same result. Any help?

    ASUS Sabertooth 990fx
    Corsair Vengeance 8gb 1600mhz
    AMD Phenom II BE 3.2GHZ
    WD Caviar Blue 500gb
    XFX 6870 HD 1gb DDR5

  479. John T says

    These instructions are like a gift from the heavens! I got to “permission denied” when running bootsect.exe, but just read the other comments above to get past that roadblock.

    Now I’ve got XP and 7 running on my netbook… ohhh, it’s a good day!

  480. Spyder says

    Excellent tutorial, thanks
    Possibly worth adding that you can speed up the format process by typing “FORMAT FS=NTFS QUICK” at Step 4

  481. eh? says

    Should you also copy over the auto run from the windows disc? It asked me if i wanted to keep, replace, or use both auto-runs.

    I didn’t know an auto-run was already created on the USB drive but I opted to keep the one on the USB drive and it seemed to work. Would it not work if i had used the auto-run file from the windows disc?

  482. hhgygy says

    This one really works.
    If you get the message:

    BOOTMGR not found. Press ctrl alt dlt to restart

    try to make the bootsect.exe command with the /force tag
    That’s what helped in my case.

    Thanks for the great tutorial

  483. Riyabul says

    I was formatting win xp. while windows is set up time show blue screen, how to fix blue sceen in formatting time. pls help me. thanx

  484. Theventhran says

    hi there,
    you have done simple and easy tutorial. i just finished reformat using your instructions. millions thanks to you..

  485. Glenn says

    Works a treat with windows 7, no problems at all, simple instructions, big thanks for posting this up.

  486. Milad says

    Hi . I am Milad . I form Iran .. Help Me to PLS :
    I have 1TB Hdd USB Hard Drive And I Need a use it for Setup Windows 7 But I Cant Make Bootablet It ..
    HELP ME To make Bootable HDD Drive

  487. ahmad says

    this is not working for me,the process stop until format and before that automatically hang on the command prompt..

  488. Myrdhin says

    Very, very nice tutorial.
    My PC didnt boot on the USB when priority was set to ‘Removable’. Worked fine however, when set to HDD. Weird eh..

  489. mung says

    i’m at step 9..but after i click ‘instal now’ , the screen display was ‘setup starting’ for the rest of mu life…whats the problem? 🙁

  490. que says

    I’ve tried this 3 times now, and only get as far as formating to 100% complete, but then it never returns to say “Diskpart successfully formated the volume”, nor does it return to a prompt that I can type further commands.

    I’ve tried searching through all these responces to find an answer, but I’m just not seeing one.

    Thanks for your help

  491. Marvin says

    Hey to all, i Just have a question,after i make a bootable usb drive to install windows and if im already finish in installing,can i still use usb for saving files,or after the installation is complete can i still erase the installer of windows 7 from usb?Thank you guyz,and i will be waiting for your opinion 🙂

  492. Spy says

    by the way, step 8 failed for me as I couldnt copy the files, but i had to mount the win image on another drive and then copy to the usb

  493. Spy says

    Hey, i tried following this but when my laptop boots i cant continue with the format because it says that I am missing the drivers for the hard disk!!
    The iso i am using for the setup is the legit downloadable copy of win 7 home prem.
    any ideas?

  494. sandeep soni says

    this trick is not working so plz any one can help me plzzzzzzzzzzzzz its very urgent because my cd drive is not working…

  495. Nilammani says

    Thank you for this post.
    I tried to step 6, it is going to fine. When I reach step 7 and type BOOTSECT.EXE /NT60 I: in H:\boot> prompt It will be something wrong! what happen? Please someone help me.
    Detail for Error message…
    H:\>CD BOOT
    H:\boot>BOOTSECT.EXE /NT60 I:
    Target volumes will be updated with BOOTMGR compatible bootcode.
    Could not map drive partitions to the associated volume device objects:
    Access is denied.
    Note: H: is Windows 7 DVD drive and I: is USB drive
    Thank you!

  496. Dave says

    Excellent guide, thanks.
    You can use daemon tools to mount a disc image of OS and then use the drive letter it assigns as your DVD drive.

  497. ieee488 says


    Worked for me with a Dell Precision M6300.

    My 8GB USB stick took more than a few seconds to format in step #4. More like minutes. 🙂

    Also, in step #8, typing ‘robocopy D:\ H:\ /MIR’ in the command prompt box worked for me.

  498. anvt says

    super sexy man…thanx a lot…gt sum minor glitches
    if u get any error stating “install drivers from the select folder”
    then jus plug ur USB in USB 2.0 port. USB 3.0 drivers are nt installed by default

    thanx a lot

  499. anon says

    This will take a few seconds (Yeah right! 🙂 even my 8gb sticks takes 10min to format… doing my 700gb hdd atm… 15min gone, and still at 1%.

    but love this guide, used it a few times, just as a quick look up for the commands. 🙂

  500. jet says

    Hi, can I ask for help in making this work? I’ve done the all the steps several times already on an 8GB usb drive but I can’t seem to make it bootable.

    Also, if it helps, the autoplay to Setup.exe does not work. I am trying to install Windows 7 on a laptop with a brand new HDD.

  501. Bruno says

    Hi all, i just see this great tut and i diced to try!

    I buy a TDK 4GB usb pen. when i try to copy all the DVD files, i says you need 87MB more space! and i see the USB pen i have 3.77. =/ WTF

    What can i do now?? plz some one hellp me here! can i zip some files?

  502. azrul zz says

    Help!! please help ..

    Master, I have problems after doing these four parts. FORMAT FS = NTFS (Formats the process may take several seconds) at first it went well up to 20 per cent, after that it turned to 0 per cent to wait too long. So I did re-from the first part, and it does not run again. So how to return the flash drive to the original as not doing the things above?
    Please, I hope the Master can help my problem.

    Disk###(Disk 2) Status(Online) Size(3819 MB) Free(0 B)


    Disk 2 is now the selected disk.


    DiskPark has encountered an error: The system cannot find the file specified. See the System Event Log for more information.

    Please Help 🙁

  503. CinCityNewKid says

    Found everything was pretty self explantory Great Guide. The only that that tripped me up was copying the files. I had them in a subdirectory… As soon as I put them in the root of the drive it worked like a charm. Thanks for posting this guide.


  504. saqib jan says

    i hope that this method will be useful.
    sir when i insert the usb in my pc it get conneted but when i type “”list disk”” in cmd it shows me only my harddrive not the connected usb flash drive to continue this process plz help me as soon as possible i will be thanksfull to you.

  505. Jami says

    The shortcut version:
    1. Format your USB to NTFS using the Windows GUI and keep it plugged in
    2. Open your iso using MagicISO or some other app and extract boot/bootsect.exe
    3. Run bootsect.exe /nt60 :
    4. Copy all contents of iso to your USB

  506. JEMAI says

    thanks mate i did using GUI to copy the files and it works. I don’t need to buy a external dvd. its really help-pull

  507. Jagdish Singh Charan says

    i proper support for this guide
    and i make pendire bootable for window 07
    and installed window 07 successful
    from jaipur Rajasthan

  508. Niko says

    Works fine! Thanks! I did in XP using VMWARE to create a Windows7 virtual machine, then installed it on my other laptop.

  509. eight86six says

    tnx so much man,
    this guide just saved my life.
    successfully instaled W7 on sony vaio.
    tnx alot once again

  510. marc says

    thank you so so so much for this guide….it works like a charm and you ended a nightmare for me….thank you 🙂

  511. waseem says

    after typing bootsect.exe /NT60 G: I GET MESSAGE “bootsect.exe is not a valid win32 application”.My current OS is Windows 7 (32-bit).however my G: drive is a virtual drive

  512. Patrick says

    I have done this all, and when restarted with bios boot from usb, install screen came up, it copied windows files, then expanded windows files, it then self restarts and instead of finishign nstall process it bring me back to install screen to reclcik install and select which partition? why is that?

  513. akshay says

    does it works for intel g31 board……….
    with hp pen drive 4gb…….
    if i set my boot device priority as
    1. usb rom
    3. hard disk..

    plz ans. and thanxs in advnce…..

  514. Please Help!!!!!!!!! says

    Hi. I used a 8 gb flash drive to do the steps but after i finished the steps my WD 1tb it’s not recognized by windows i try 3 other laptop but same. it’s working perfect b4 i do the steps. Please help it’s has all my data and i don’t have the backup for it

  515. mohammad says

    Hey guys,
    It also work fine with me,just a few tips that already said above. cmd in admin mode only,if dont ur access will be denied.
    2.if you are running win 32 bit(x86) and wants to install a 64bit(x64)windows you will have a should find a win 32bit and try to update the USB drive with BOOTMGR compatible code with that dvd.after that you can put your win64bit files on USB and change the boot priority at the BIOS to USB from the HDD or CD ROM drive.
    notice that you need to change this priority after copying win files into HDD to continue installing from HDD.

  516. QT says

    Hi BATZZZ19,

    To create 64BIT O.S. to USB flash disk, you need to install 64 bit O.S. to your platform and then typing the ‘BOOTSECT.EXE /NT60 E:’ command line with cmd prompt under 64 bit O.S.

    Best regards,

  517. QT says

    Hi sir,
    thanks for your share.but the ‘FORMAT FS=NTFS’command line just to install legacy Win7 O.S. only. It can’t install the UEFI Win7 O.S with Win7 64bit DVD Disc.

    You can changed the command line like as ‘FORMAT QUICK FS=FAT32’ to format the USB flash disk.



  518. BATZZZ19 says



    This version of D:\bootsect.exe is not compatible with the version of Windows you’re running. Check your computer’s system information to see wheter you need x86 (32-bit) or x64 (64-bit) version of the program, and then contact the sofware publisher.

    so i was guessing i need to do the setup of cmd from a x64 bit computer to make my flash drive get the info from cd x64 to the flash drive

    but im clueless now, since i dont think that matters since it didn’t read the disk yet, any suggestions?

  519. Dmn says

    ALL DONE. all steps, commands, etc.
    But I had a problem:


    Ramdisk device creation failed due to insufficient memory.

    QUESTION: What could I do?

  520. abhay singh says

    i have only C drive in 500 GB HDD in my Acer Laptaop. in that C drive i have company loaded original window 7 home basic. i want the partition of my C drive without format my window7.
    plz give me a solution about how i can partition of my C drive 500 GB HDD.

  521. villa says

    everything i have done properly but my usb device doesn’t work..and do not run auto..only i shows the win7 logo on my usb device give me a solution about how to autorun and boot …….

  522. nishant says

    While running and cmd.exe from windows; go to system32 folder in windows installed on your pc. then find cmd.exe and right click on it and select “Run as administrator” to run the cmd.exe
    You will not get any error in the above given process…

  523. rene martesano says

    please could you help me i did to format the fs=ntfs so i saw the 100 percent completed but when i go to 5,6 and 7 i could not able to go in the cd boot and i was tried to type the bootsect.exe /nt60 h: so when i enter that it’s not working…. hope you gonna help me for this problem thank you

  524. Aravind says

    plss do help me bro.. as am not eble to complete the process sucessfully, i think its just because am not having a proper dvd drive in my pc.. i tried using a usb flash drive bt the cmd is showing that they cannot recognise the file…. so plss do help me in this situation…

  525. Eric says

    Its not working for me. I don’t know if that’s because I don’t HAVE an optical drive, which was the whole point of this tutorial.

  526. hari says

    hi this is hari it is a good one to install the windows7 i have already use it but now i want to install the windows xp using the same following procedure can i do it please tell me if not whats the reason…..

  527. Dumplump says

    This Blows. I Google Searched for How To Install Windows TOOOOOOOOOOOOOOOOOOOOOOO a USB External drive not FROM. so disappointed. Took all that time just to come up short.

  528. Vasco says

    Thanks for the info, it was most valuable. I’ve been trying to reinstall my SO from the recovery DVD but my cd drive went nuts… this was the only option, and it worked fine.
    Thanks again and keep up the good posts…. 🙂

  529. THOMAS says

    STEP 8: Copy your Windows 7/Vista DVD contents to the USB flash drive.

    Do you mean that one should copy Dvd contents using cmd ?
    Can I simply copy and paste the files as usual ?

  530. peric says

    Thank you for sharing your valuable knowlege, It has saved alot of Hardwork and times trying to install from a Slow DVd and CD, Thanks man, See you in future with more informations and knowlege,God bless You

  531. Mrugesh says

    Not able to “CLEAN”. You mentioned in the 4th step.
    Can please provide the solution.
    Thanks in advance.

  532. scottG says

    I had tried multiple instructions with all failures. This worked perfect and I took my all versions image and it worked so that I could choose from all versions of either 32 bit and 64bit versions. Now all I would like to do is include a SP1 slipstreamed onto the flash drive and I would be really happy:)) Any suggestions to being able to modify configuration for a slipstream update?

  533. John says

    “This guide works 100% for Vista & Windows 7 unlike most of the guides out there. I have seen many sites/blogs that have “Install Vista from USB guide” but either with incomplete steps or not working guide. I have also seen some guides that don’t’ use proper commands in this guide. After spending many hours I have come up with this 100% working guide.”

    Hummmmm. Doesn’t work for me. I have no USB drive listed when I use list disk command in diskpart.

  534. Hoang says