How To Install Windows 7 On USB Flash Drive
Posted June 11, 2009 – 1:49 pm in: Windows 7 GuidesMicrosoft has been doing only right things with the much anticipated Windows 7 and the release candidate (RC) is available to download for free.
As you all know creating a bootable USB, or installing Windows 7 or Vista using USB is a piece of cake. It doesn’t take much time and effort to have a bootable USB. Now, after replaying to several e-mails about installing Windows 7 or Vista on a USB drive, I have decided to write this detailed guide.
Requirements to install Windows 7 on USB:
# An USB flash drive with a minimum of 6 GB disk space to install Windows 7 or Vista. You can use a 4 GB drive to install XP.
# Bootable Windows 7 USB or DVD.
# Free time
So let’s begin with the installing Windows 7 on USB procedure:
1. First of all, connect your USB to the machine and backup all the data from the USB drive.
2. Download VirtualBox portable, double-click on the executable file and extract the contents to your USB.
3. Now, go to the VirtualBox portable folder in USB, and execute the Portable-VirtualBox (.exe) file.
4. From here onwards, you need to follow the onscreen procedure to create a virtual disk and install Windows 7 on USB. Follow the install Windows 7 on VirtualBox guide to complete the process.
5. Once you finish the installation process, you can safely close VirtualBox and remove your USB drive.
6. You can now use this Windows 7 USB drive on any Windows machine that you want. To use Windows 7 on other machine, connect the Windows 7 USB, open USB drive, and run portable-VirtualBox file.
Tags: Install Windows 7 On USB, On USB, Windows 7
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37 Comments
Sounds very awesome and a good alternative to a partian. I want to use this to try out the beta of windows 7 on PC’s. Will clear my old 30GB ipod, and will that. Will the opperating system by laggy because of the disk space? Or will it be ok? Email me back, thanks
30GB is more than enough. You need only 6GB to install Vista or Windows 7 on USB.
NOT WORK, NOT ENOUGHT SPACES ON 8G USB !?
“You need only 6GB to install Vista or Windows 7 on USB”
VS
“But make sure that you have allocated 16+ GB”
?????????????????
To install Windows 7 on VHD, you need minimum 6 GB, and 16 GB for normal installation.
awesome … very helpful
AFAIK, you can only run the guest – in this case Windows 7 – when you are logged in to the host with admin rights, because VB needs the kernel drivers. Is that right? Have you tried plugging the USB stick into another PC when you are logged in without admin rights?
As an aside, I installed and ran portable VirtualBox but came up wiuth two problems which turned me off it:
1. Although I could ping external sites fro the cmd prompt, I couldn’t get Firefox to work.
2. When I closed the guest window, the portable virtualbox process didn’t close but just left the systray icon and amessage centre-screen saying “Exit Portable VirtualBox”. I had to use Task Manager to kill the process and in one case had to reboot.
VirtualBox is magnificent: Portable VirtualBox feels buggy.
No what I was looking for. This requires an operating system already installed on an internal hard drive to function. I am looking for a power on solution that will boot from USB into Windows 7
hi !
you DON´T need 16 GB to install Windows 7 !
i have installed it on a 5.7 GB partion…
16 GB is recommended by Microsoft.
This method fails. I used Virtualbox to install Windows 7 directly to a physical USB disk, but upon booting on bare metal received the 0x7B BSOD.
@Jiang
Did you try with portable VirtualBox?
I installed it on an external HD 80Gb using this Gr8 method .. i have doual op sys on the same machine Xp & vista .. the win 7 was working perfectly on both OSs but all of asuden the virtualBox gave me a message that my win 7 is inaccessble on both OS. actualy this happend after i installed the 3d gadget feature in the box ..
the only problem that i couldn’t solve is that the virtual box does not recognize the other external usb divices. so u can not use the win 7 on virtualbox to read other flash mem or external HDD
I installed it Virtual Portable fine last night. Not realizing I had to also install Win7, I clicked on Windows 7 in the main window, and got a kernal error message. I had thought I had installed it wrong, and reformatted my USB drive to make sure it was clean. Now it will not install. I get as far as the window that gives you the choice of the “Download installation file of VirtualBox” button or search for the file. In case my previous install put something on the host computer, I used the restore point feature to go back to a point before my initial install Thursday night. Please help.
Thank you in advance.
Forget my Previous message. I have installed VirtualBox on my WD Passport drive. Using it on a host with Windows 7 Ultimate 64 Bit, it gave me the can’t find kernel message. When I used a host with XP, my work system with no admin rights it worked. I need it to work on a host with Win 7 because next year, the company I work for is going to that. Has anyone heard if the current version of portable VB does not work on a host with Win 7?
It’s been extracting and/or compressing for the past halfhour. Normal? Fishy? How much longer do I have to wait? Grateful for answers.
A Bit Difficult procedure is defined here, it can be defined in more easier way
Virtualbox portable don’t work.
Edit: VirtualBox Portable has takin’ a bit of a dive.
This is misleading. This doesn’t install Windows 7 on a USB drive. This installs a Windows 7 VM on a USB drive.
The two are not the same; not at all.
To imply otherwise is disingenuous.
This does not work. I have a WD 16GB and I am using portable virtual box, but I get to 88% extract and it gives me an error that says it ran out of space and it dies. Any help would be great!
You guys might want to try this method instead http://faelmar-tanada.spaces.live.com/blog/cns!73A0272B9E18B517!173.entry
I tried this process and I did not get what I expected. I wanted to have a VM of Windows 7 on the flash drive, but following these instructions all I get is the extracted files to install VirtualBox. The VM ends up on the C: drive in a .VirtualBox folder, and not on the USB. What am I missing here?
Please Reply.
Thanks,
Art
Wrong titling leads to waisted time.
How To Install Windows 7 On USB Flash Drive it doesnt explain at all, PvboxTroll.
this stuff only fouls up the searchresults >:-|
Why do you need virtual box to install on USB? I don’t want some virtual crap.
i want a software that will be compatible with all windows versions to create bootable flash to installed on my computer. because i like using different versions of windows.
Simply amazing. Now i am running windows 7 in my portable hard disk along with windows XP sp3.
Is there any quick tips to install IE6 in windows 7?
Expecting your Reply.
Hey Vamban,
Did you say that you have installed Windows 7 ON A PORTABLE EXTERNAL HARD DISK?? I tried the same but it seems windows OS cannot be installed on an external hard disk. I have searched every bit and i have not found a solution to it. If somehow you have managed to do it please tell the steps to do it. I will be really grateful to you.
Thanks
Nitesh
Nitesh,
He was saying, Amazing, I am running on a portable HDD *NOW*, which means due to this article in the above mentioned way. :-/
is it possible to use this portable windows 7 on an android tablet .(assuming the tablet has usb port)
From here onwards, you need to follow the onscreen procedure to create a virtual disk and install Windows 7 on USB. Follow the install Windows 7 on VirtualBox guide to complete the process. I don’t see detail here. I have the portable VM on my 16gb flash and now what? I have the full Windows 7 in my DVD drive. I have installed mini XP on a flash and XP boot flash for istalling XP to a netbook that has no CD and that was not exactly a piece of cake since I don’t do this every day.
Hi Mayhem
Kingston sell a 4GiB USB with a Windows friendly portable on it that I use for my stuff with external computers running Windows. You can install just about anything onto the USB and have your own personal OS when away from your own computers. I use it for VLC and Firefox alot so know it works fine.
I installed win7 in virtualbox its perfect in host os but when I reboot and want to boot from usb this error appears:bootmgr is missing and when I COPY bootmgr from setup dvd the error changes to ‘boot/bcd is missing and when I copy boot/bcd from dvd or system the error changes to “0xc000000f” =.My host was 7 and the usb is “kingmax 8G” I realy want to have a portable usb to revive any dead system or other usages.Virtualbox is perfect and easy to use but why I can’t boot the damned os from usb??
What a wonderful post, it will really help me in installing Wiin7 in my friend’s comp who doesn’t have a DVD drive.
Or, instead of going through this ridiculously and uselessly complicated and frustrating procedure, just boot any pc with your copy of Win7 and USB drive attached, go to the Repair my computer option, select the tools, go to command prompt and just run diskpart. This article reminds me of what NASA did in the 60s : they spent 60 million public US $ to manufacture a pen that would write in zero gravity. The russians used a pencil.
Thank you for giving me the opportunity to learn and post comments in your site.
for me its only 4GB…
how does it work with usb 2.0? slow doesn’t it?
how about usb 3.0 flash drive?
what would you choose between a external hdd with 5400 rpm or flash drive 16 gb with usb 3.0?
please reply