How To Boot And Install Windows 7 From USB Flash Drive

Updated: An updated version of this tutorial can be found here, featuring an easier and faster way to create a Windows 7 USB installer drive.

The Windows 7 beta has been released for quite a while now. If you want to follow the crowd and test it in your system, but do not want to burn into a DVD, here is how you can create a bootable USB drive to install Windows 7 on your system.

Format USB flash drive to NTFS format

(For Win XP only. Vista users can directly format the USB drive to NTFS format) In your Windows, go to Control panel -> system -> hardware -> Device manager.

Under the disk drives section, right click on the USB storage drive and select Properties.

device properties

Go to the Policies tab, select optimize for performance. Click OK.

device policies

Open your Windows Explorer, you should see the USB storage drive in the inventory. Right click and select Format. Select NTFS from the drop down bar. Click Start.

format to NTFS

For Windows XP

Download MBRWizard. Extract the zipped files to your desktop.

Open a command prompt (Start –> Program –> Accessories –> Command Prompt).

Record the USB flash drive disk number


Make the USB drive active.

For Windows Vista

On the Start menu, navigate to the command prompt entry. Right-click and select Run as administrator.



Record the disk number of your USB flash drive.


Select the USB disk.

List the current partition. Record the partition number.

Select the current partition and make it active.


Creating bootable USB flash drive

Download Windows 7 iso (32-bit) file to your desktop (The download link is no longer valid).

Download and install WinRAR.

Right-click on the Windows 7 iso file and select Extract files. Extract the files to a folder (you can name the folder any name you want, but for illustration purpose, I name it win-7) in your desktop.

extract windows 7 ISO

In your command prompt, cd to the windows 7 folder.

create bootsector

Now, copy all the files from the Windows 7 folder to the USB flash drive.

Reboot the computer. Remember to change the first boot device to your USB drive in the BIOS.

You should be able to install Windows 7 from your USB flash drive now.

Damien Damien

Damien Oh started writing tech articles since 2007 and has over 10 years of experience in the tech industry. He is proficient in Windows, Linux, Mac, Android and iOS, and worked as a part time WordPress Developer. He is currently the owner and Editor-in-Chief of Make Tech Easier.


  1. Unsure of what I am doing incorrectly, but when I get to here “select volume X (X is the drive number of the USB flash drive)

    It wont allow me to make it active. I get this “There is no partition selected. Please select a partition and try again.”

    Now, unlike your screen shot where the status of your USB drive is healthy, while mine is healthy in diskmgmt, it will not show.

    1. Okay, Type The Following Commands that have the “” but do not include them. Also ignor the () because thats information i want you to know.
      “List Volume”

      “Select Volume X” (where X is the disk you want)

      “Select Partition 1” (If it says no Partition Selected then you have to create a partition)

      To create partition – Type: “Create Partition Primary”

      “Select Partition 1”


      and there you go.


  2. ugh, sorry, a good rule for me, which I fail to do at times. READ first. That was a vista instruction, and I was using XP

  3. I get this error in the command prompt:
    C:UsersRoyDesktopwin-7boot>bootsect /nt60 f:
    This version of C:UsersRoya NeissaniDesktopwin-7bootbootsect.exe is not co
    mpatible with the version of Windows you’re running. Check your computer’s syste
    m information to see whether you need a x86 (32-bit) or x64 (64-bit) version of
    the program, and then contact the software publisher.

    Is this a result of downloading the 64 bit version of windows7 or having the 32 but version of vista home premium? How can i get this working?

    1. If you are using a 32-bit machine/OS, the above method only work for 32-bit Windows 7. If you have 64-bit Win 7, you will need to use 64-bit machine/OS to get it working.

      1. helme DAMIEN !

        {{ Select the USB disk.

        select disk X (X is the drive number of the USB flash drive)
        List the current partition. Record the partition number.

        list partition
        Select the current partition and make it active.

        select partition Y (Y is the partition

      2. You can use a 32 bit os to create a bootable 64 bit iso. Instead of useing the wizard in the WinToFlash Prgram i went to tasks and selceted the transfer windows 7 setup to flash on my XP machine runing 32 bit, and created the install usb stick that worked with the 64 bit iso

    2. It means that the Version Of Windows you are running is not compatible with what you are trying to do. See if your Windows Version is 32-bit,64-bit,or i think 86-bit. The problem you have might require that you have 64-bit or 86-bit. It may also have to do with your OS (Operating System) its the same thing – 32-bit or 64-bit, etc.
      Goto Control Panel>System> and look for your System Type: XX-bit (where XX is 32 or 64 or 86)

  4. mbrwiz /disk=X /active=X (X is Disk Number of your USB Drive)

    This is incorrect, /active is a boolean value taking 1 or 0. So it should read like:

    mbrwiz /disk=X /active=1 (X is Disk Number of your USB Drive)

  5. No matter what I do I can’t get the disk to show up after typing disk list. I’ve gone through all the steps before that at least three times to no prevail including changing it to what Obsidian said.

    1. Are you using Win XP or Vista? If you are on Win Vista, you don’t need to use MBRWizard

  6. Hello,

    My operating system at the time I tried the above steps was
    Windows 7 Home Premium Beta(with no key I might add).

    The final error said:

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

    What did I do wrong?

    1. Is there Windows 7 Home Premium beta??? I thought Microsoft only release the Ultimate version of public testing?

  7. According to the Torrent website this guy with nickname “djdanster” posted Windows 7 Home Premium Build 7000 BETA direct from Microsoft Connect.

    Not sure if its fake or not. The first comment of a user asked the question “Is this for real?”.

    According to another torrent by “orbit30”, it seems there will be 4 types of windows 7[home basic, home premium, business, and ultimate], because I saw a screenshot.

    Ofcourse, this is a torrent website…not sure how reliable this information is! Demonoid cannot be held responsible for what its users post, or any other actions of its users.
    So..I will try to do all the above steps again that you mention on windows XP, when I have time.

    Thanks again Damien

  8. I took the easy way out. I created the DVD so I would have a “permanent” copy and then just copied that to a 4GB flash drive. I plugged it into a a netbook with an Atom processor and 1GB of RAM and ran setup. It worked perfectly. The performance scores were, as expected, not outstanding, but they were in line with what I expected.

    1. did not work on hp mini for me diane I tried it two ways copying from the dvd made from the iso and from the iso itself to flashdisk i tried installing it on an atom processor on an hp mini2140 no go.

  9. mbrwiz /disk=X /active=X (X is Disk Number of your USB Drive)

    it should be:

    mbrwiz /disk=X /active=1

  10. Thanks, Great post very easy to follow, I have not tested it yet, waiting for the files to finish copying.
    Note: I did not extract the file from the ISO I just mounted using daemon tools.

    Question: Do I really need all the files on the DVD or just the boot.wim? From my understanding the Boot.wim is the only file needed. I will test and report my findings.

    Thanks again.

    1. At first I was unable to get this to work, so I did some research and this is how I go it to work.

      I did a few things different, first after selecting the disk I did a clean, then create partition primary and then select partition, after making the partition active I did a format fs=fat32 and then assign and exit. Finally I ran bootsect /nt60 X: (X is the drive latter of your USB drive ) and then copied the contents of my Windows 7 directory to the usb drive.

      I am going to experiment with some of the files in the windows 7 directory and see if I cant make this fit on a 2GB thumb drive.

    2. I got it to work after I modified a few of your steps.

      1. diskpart
      2. select disk 1 (assuming disk 1 is your usb drive, make sure you use list disk if you are not sure.
      3. clean – New step
      4. create partition – New step
      5. Select Partition 1
      6. active
      7. format fs=fat32 – new step
      8. assign – new step
      9. exit

      Then I opened a command prompt and went to the windows 7 directory and run bootsect /nt60 X: (X is the drive latter of your USB drive )

      finally copy the windows 7 directory over to the usb drive.

      I dont know if this will work for anyone else but it worked for me.

      Thanks again for the great post.

      1. Hello,
        Please help !!! Here what I have done:
        1.Download Windows 7 iso file,which I put it in isoBuster and extracted.
        2.Because I have listen it is better to make clean installation,I bought new WD external HDD- Passport Studio 500 [/contents/base/binaire.php3 Gb] and put it all information from my PC to HDD (around 90Gb very important data + [/contents/win/winintro.php3 windows] 7 of course)!
        3.I run “cmd” and get in DOS
        – “diskpart”
        – “list disk”
        (Because there were nothing,not disk 1,2,3-i just select disk 1-don`t ask me why,coz i don`t know for myself,because i am stupid!!!)
        – select disk 1
        – clean…
        After i wrote “clean”,I disconnect usb cable,because I afraid-what does “clean” means!!??
        For god sake-i have all informations from last 6 years on my external hard disk…

        Now,my WD doesn`t work,everything is ok in “drive manager”,when i connect usb cable there is the external usb hard drive showed up on the Safely Remove Hardware list right down,but I can not enter into the disk-inside and I am so afraid and desperate and don`t know what to do…
        How you can see,I am beginner,but please tell me what is the best solution for me to do now and to don`t lose my data on WD (if i already didn`t lost :(
        Please,please help-with days I don`t know what to do….
        My e-mail is via_makedonia yahoo dot com please write me there.
        What I have tried:
        connecting my WD with 3 deferent cables – usb and firewire in deferent ports.
        installing drivers from wd site

        When I check Device Manager it shows that the device is installed and working properly but it will not show in “my computer” and I can’t access it.
        before the problem,my HDD appeared as drive H:
        I wouldn’t be half as frustrated if it hadn’t been working properly before this.Plus-ALL data is on my HDD,and I don`t even know if it is still there :(

        I do it this:
        2 Step Solution for XP users:
        Part 1:
        Go to
        Control panel -> Performance and Maintenance (cannot be in classic view to see this link) -> Administrator Tools -> Services -> Universal Plug and Play
        If Universal Plug and Play is set to manual switch to automatic.
        Part 2
        Double Click Safely Remove icon on the bottom right-> Select device->click Properties -> click Volumes -> click Populate -> hit OK -> if nothing shows it may need to be formatted

        Also i was in DISK MANAGEMENT,but except formating disk,I don`t see solution :(
        And formating will erase all data on the disk,isn`t it?! (if i have it,of course).
        again nothing :( :(

        It will be everything ok if I re-install Windows xp ?!
        All if I repair Windows XP through installation process?
        Do I have problem with MBR ?
        Should I format my WD ?
        Common guys,I am sure that some one of you knows,there must be way to solve the problem!
        Thanks in advance !!!!!!

  11. I have an 8gb kingston data traveler I would like to put other apps and files on besides the Win7 installation ones. Do I create separate folders, partitions, or just copy them in alongside the Win7 files?

    1. It doesn’t matter whether you store them in separate folders or partition. It won’t affect the boot up and installation.

  12. Hello-

    Thanks for this post- I followed everything- however I’m already running Windows 7 7057 and I’m unable to boot from the USB drive, as I only get a black screen. My machine is capable of booting from USB. Are there any different steps to take when doing this under Windows 7?

  13. I have Win7 bootable on Kingston 8gb flash with my other apps/files. I would like to put GWScan 5.12 bootable and Memtest86 on the same stick and allow them to boot also. Is there a simple way to do this? Perhaps a more generalized bootsect that would work for any of these 3 bootable programs/installers if I just take their files out of a storage folder into the root of the drive? Another method? Thanks.

  14. hey above not working for 64bit. I downloaded 7077 x64 bit release dvd iso and tried to make bootable as shown above for USB but it says no compatible version. 32 bit and 64bit issue.
    i have tried on both WIndows XP sp3 and Windows 7 build 7000.
    both have same prob. (both installed systems are 32bit ==> x86)’
    what to do reply

  15. it came up “could not map drive partitions to the associated volume access is denied”???

  16. **Win7RC 64BIT!**

    The 64bit bootsect.exe wont work in a 32bit enviroment. You will need a 32bit version.

    I had downloaded both Win7RC 32bit and 64bit versions. So I just used the 32bit bootsect.exe with the “bootsect /nt60” switch to set the usb drive bootable. Then I copied the 64bit files accross.

    **Non Booting USB**

    I was still unable to boot from usb despite setting 1st, 2nd and 3rd Boot Devices correctly in the Bios. Even when I set all boot devices to cancel, it still booted into WinXP!?!?

    I then investigated a BIOS option called “Hard Disk Boot Priority” that appeared above my 1st, 2nd and 3rd Boot Device settings. This option allowed me to change the physical drive order that the BIOS checks through. With the USB stick plugged in, this became an option. When I set the USB as the first device, the USB booted in to Win7 install.

    I am using a Gigabyte GA-965P-DS3 motherboard.

    I have not installed Win7 yet as I am still backing up files. However I see no reason that the method above will screw up a 64bit install.

    If you do not have a 32bit Vista or Win7 disc / iso to get at a 32bit bootsect.exe, I suggest “googling” bootsect.exe and downloading just that bit.

    1. I am attempting this scheme with a Seagate FreeAgent Go USB drive.

      No need to format the drive, as it came formatted with NTFS. However, I decided to shrink the original 250GB partition to leave room for a small bootable partition.

      From WIN7 Beta 64, I created the new partition, formatted it NTFS, made it active. Used Bootsect from the downloaded image, and it said it was successful. Copied all files to the new partition.

      I set the hard drive sequence to make the GO drive first and rebooted.

      Still boots from my internal hard drive. Any ideas?

  17. Hi!
    found this page through google, good instructions! worked without any problems!

    regards / Anfanglir

  18. I was never able to get my mobo to boot the FreeAgent Go. Maybe this only works with no OS on the internal hard drive.

    I got what I wanted simply by invoking Setup in the extracted files. Installed RC into a newly formatted partition and it created a dual boot with Win7 Beta. The dual boot showed two “Windows 7” entries, but I fixed that using bcdedit.

    1. I’ve got the same problem

      I created the bootable USB drive on PC 1

      When I try to use it to boot PC2 (my netbook) it says BOOTMGR is missing.

      1. I had the same problem, till I discovered that I missed the last step, which “copy all the files from the Windows 7 folder to the USB flash drive.”


  19. i did everything as instructions but when i booted from usb it said “invalid or damaged partitions” (???) im using imation 8gb T_T any help

  20. if that method didnt work…

    this one works on vista and XP

    if you just ignore the windows 7 part this gives very detailed instructions on how to do it

  21. Thank you! I wont say it worked without a hitch but it worked and I learned from it so its all good. Thanks again

  22. im havin problems at the very last step :(. I also named my windows 7 folder win-7 just like you did, to make it easier. Instead of getting a nice cmd like you, i get:

    “could not open the volume root directory: the parameter is incorrect. no bootcode was successfully updated.”

    1. 1) Which version of Windows are you using?
      2) Did you open the command prompt as root?
      3) Did you make sure that the file path to the Win-7 folder is set correctly?

  23. Very good article. Thank you.

    Followed your procedure to a “T” using a 4 GB Corsair USB flash drive as the target, from Windows XP Pro.

    When attempting to boot from that device, the boot sector is found but single error message “Cannot load operating system” is displayed on an otherwise blank monitor screen.

    One difference observed afterward from MBRwiz, the USB flash drive has a start sector of 32 rather than 63 (would like to have inserted screen shot from MBRwiz). Can you recommend an internals-level description of the boot sequence from a low level?

  24. Hi im having problems when i get to the last part before you copy it over to your flash drive.. this is what i says…..

    Microsoft Windows [Version 6.0.6001]
    Copyright (c) 2006 Microsoft Corporation. All rights reserved.

    C:UsersTJ>cd desktop/windows 7

    C:UsersTJDesktopWindows 7>cd boot

    C:UsersTJDesktopWindows 7boot>boot /nt60 H:
    ‘boot’ is not recognized as an internal or external command,
    operable program or batch file.

    C:UsersTJDesktopWindows 7boot>bootsect /nt60 H:
    Target volumes will be updated with BOOTMGR compatible bootcode.

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

    C:UsersTJDesktopWindows 7boot>

  25. I was able to follow all instructions without a hitch (using Win-7 32-bit. Did formatting on XP OS).
    Now when i try to install Win-7 on the new machine (has Centrino Duo processor) it appears as if it’s installing just fine, but as soon as the machine reboots to complete the installation, the install starts all over again from the beginning!
    Did i do something wrong? Should i start from scratch and try again?

  26. I used the error message you specified (without “access denied”) and found this:
    which suggests either bootsect is being executed from the USB drive that you are trying to write to (run bootsect from the disk or CD, wherever bootsect is, but not from the USB drive) or bootsect is not being run as administrator.

  27. Hi Guys,

    I’ve tried this in both XP and Vista now and both times i get an error when trying to boot:

    “Error reading bootloader” (Or something similar)

    Its complains about the file bootbcd.

    Being as i’ve had this problem on both OS’ i assume its me doing something wrong. Anyone have any ideas?

    Much appreciated.

    1. Try using WinToFlash –

  28. The vista process doesn’t work because the path is wrong.
    C:Documents and SettingsKevin WhetstoneDesktopWin7>cd boot
    The system cannot find the path specified.
    C:Documents and SettingsKevin WhetstoneDesktopWin7>cd boot.images
    C:Documents and SettingsKevin WhetstoneDesktopWin7boot.images> /nt60E
    ‘/nt60E’ is not recognized as an internal or external command,
    operable program or batch file
    0 E:
    ‘bootsect’ is not recognized as an internal or external command,
    operable program or batch file.

  29. Try putting “s around directories and connected commands that have spaces.

    “C:Documents and SettingsKevin WhetstoneDesktopWin7>cd boot”

    “C:Documents and SettingsKevin WhetstoneDesktopWin7boot.images> /nt60E”

    Good luck :P

  30. *Sorry for double post*

    Or simply move to a location that the directory does NOT have spaces in it, such as C:Win7 or something.

  31. Hi!

    I got this error:
    C:Win-7boot>bootsect.exe /nt60 g:
    Target volumes will be updated with BOOTMGR compatible bootcode.

    G: (\?Volume{8f38d949-cd26-11de-acb9-001a4b634685})

    Could not open the volume root directory:
    The parameter is incorrect.

    No bootcode was successfully updated.

    and also when following steps “format fs=ntfs” it doesn’t show successful and shows list of commands as if my command was wrong.

    Please help Thanks!

    1. hi guyz…the easiest way to make a bootable window 7 flash drive is by using ultraiso

      I m sure you have heard about various image burning tools like poweriso or magiciso.Ultraiso is also a image burning tool but along with image burining it can be used to make a bootable winow7 .
      so just go to and download a trial version of this software and forget about all these lenghty commands :)

      i hope this will help you

  32. Surfed into this page from a Google vector after getting hosed repeatedly with a 0X80070570 error. Everything worked well and I am completing my install now!

    Thank you Damien–I learned a lot from you this evening…

  33. Thanks for the instructions. they worked very well. one note, even if you are logged in as the administator, you will get access denied when doing bootsect. I had to still open CMD as administrator (right click CMD off Accessories and open as administator

    thanks again!

  34. Ok, for all the ones having the access denied error message.
    1)Put the win-7 folder in your system32 folder
    2)Run command prompt as admin (should be like: CWindowssystem32>)
    3)Type cd win-7/boot, hit enter
    4)Type bootsect /nt60 x: (x being the letter of your usb key), hit enter

    It should work like this. Remember, if you have vista 32 bits, you need to get windows x86.

    1. Hi Vladimir,

      I can imagine how it is painful to loose everything in just couple of seconds. So, right now I will be concentrating to get your data back, rather than to how installing Windows 7, which you can do later (with your data hard disk out of the computer.

      Most probably all your data is still there, the best case you can get it back in couple of minutes, sometimes and as it is a 500G hard disk it may take 5 hours for a recovery software to get your files back.

      The clean command did removed partition or volume formatting from the disk by zeroing sectors. By default, only the MBR or GPT partitioning information and any hidden sector information on MBR (Master Boot Record) disks is overwritten.

      What we will try to do, is to rebuild that MBR records, either by some third party software (which I prefer) or by some commands.

      First I suggest you try to download & try some recovery software like Paragon recovery CD, Acronis Recovery CD, or partition recovery sw and use the fix Boot Record option. the rebuilding operation should be quick (send me an email alexegrus @ yahoo dot com if you do not know how to get them)

      If it did not work, then check this

      Alternatively we will have to get the files themselves by using a file recovery application like recover my files, disk doctor undelete.

      Best of Luck, you gona get them I believe so.

  35. Thanks for the guide… much better than some of the others I found. My DVD for the 64-bit version wasn’t bootable for some reason, so I used this guide to create a bootable USB thumb drive. Since I was setting it up on a different PC with Vista 32-bit, I had to get the bootsect.exe file from a 32-bit version of Windows 7.

  36. Hi,
    Instructions were very helpful and expand, install update successfully but when it reboots it again install with loading files and language option repeating the same thing though many times i tried to boot from hard disk but not successful. My netbook is ACER ASPIRE ONE with 1GB RAM and 120 GB Hard disk. I need urgent help.
    Thanking in advance

  37. I obviously got something wrong and it did not work But now my Flash Drive is a creepy crawly drive, what used to download in seconds now takes hours. So how do I reset my 16gb creepy crawly drive back into a flash drive please. Thanks

  38. Hi

    have done all you have asked but Kingston 8GB will not boot. It is 1st priority in Boot list and even if i select it in Boot Manager – nothing. If I check it in my Drive list it appears as Drive F – even has a Windows 7 icon. I’m pretty sure it is bootable as it appears in the list but it wont start.

    appreciate any help

    1. Download a freeware from this site:
      It’s easier to use. i used this a lot of time on my Acer Timeline since it doesn’t have dvd-rom…


  39. Fantastic. Worked exactly as I hoped it would!

    My little HP Mini laptop has a 16gb solid state, so it was always going to be impossible for me to update it from XP, or even clean install windows 7 using the windows installer, as my hard drive wouldn’t have enough space to store the old windows installation.

    So! This is perfect – I can now use Windows 7 x86 on my little notebook.

    Thank you kindly.

  40. How can I get my normal USB drive?
    It’s NTFS right?
    I can’t format it, it says it’s right protected.

    1. A normal USB drive usually come with Fat32 filesystem, but in some situations, it can be in NTFS as well.

      If it is NTFS, you probably won’t be able to delete the file or format because of the file permissions on the drive.

      To fix this, right-click on the drive and selecting Properties. Click on the Security tab, click Advanced. Click on the “apply to all child directories” checkbox, and click apply.

      Next, still on the Security tab, select Add, type in ‘everyone’ and press OK. Select “Full Control’ in the permissions box.

      You should now be able to delete all the files or format the drive now.

  41. Thanks for this nice how to, but I’d like to leave a message to people out there:

    This will not work if you’re on XP. I spend a lot of time trying to figure this out.

    Keeps returning an error message when trying to boot: “boot0: error”.

    Best regards!

      1. The problem stems from the fact that the Windows command line disk utility (diskpart) does not support removable disks under XP, which is the main purpose for using MBRWizard to set the partition active. Aside from this there shouldn’t be a problem under XP.

  42. hey i found something much useful

  43. i want to try windows 7 x64 on my laptop that is running vista 32 but i dont want to remove vita till i know how 7 will run/work can any one help ? can i install 7 to an external hdd and run it from there and keep my vista too any help would be awsome as i have hit a brick wall chears Doodlz out…..

  44. Thanks for the tip, but I cant seem to select the partition using Diskpart. I’m trying this from a Windows 7 machine itself. I could see that Partition 1 of my USB is already selected(a star) when I listed the partitions. But when I punched in the command “Active” it says no Parition selected. So, couldnt continue with. Am I missing anything ?

  45. Hi there i cant my usb to boot, i do all the diskpart steps but when i tray to make it a bootable it gives me an error: “could not map drive partition to the associated volume device object: access denied” Please help because i need to upgrade from xp to win 7. I tryed to use all 3 o.s. and failed in all of them. my e mail is if some one knows how to solve this i appreciated.

  46. i have the same problem….“could not map drive partition to the associated volume device object: access denied” Please help …thankss

  47. I tried it many times but when i try to active disk i get this error

    Error 64: Invalid Parameter: 2 what about that?

  48. i seem to get and error when i run bootsect saying that my 32 bit vista os is incompatible with the windows 7 64 bit. is there a work around for this.

    1. Unfortunately you will need a version of bootsect which matches the operating system under which you are running. I typically download both Win7 platforms (x86/x64) and use the appropriate version.

  49. I am running Windows 7, and tried to install windows vista to a 120GB external USB drive following instructions above. It boots fine, but when I select the USB drive to install Windows Vista to it, it says cant install Windows to USB drive. Help!!!

  50. i cant make bootable flash drive ive already formatted my usb when im making bootsect in cmd prompt this is the message coming up… could not map drive partitions to the associated device objects.. access is denied. can u help me for this.. pls?

  51. allowed me to install Windows 7 on my Netbook. Thank you for taking the time to write this tutorial.

  52. Hey ever one MAPPING A DISk problem is due to access denied….IF U RUN Command prompt as administrator than u can do it eaisly….thanx to author

  53. Thanx for the tutorial. worked like a charm first time.. Tried WinToFlash and it failed miserably.. needed this to install win7 to a bunch on P4 2.8GHz Dell optiplexes with no DVD drives, whos disks were partitioned small.. Stuart.. u dont install it to the usb drive you just simply copy the files you extracted from the ISO to the usb drive..

  54. My pen drive problem. And I want active MBR. I follow your instruction,
    cd Desktop/MBRWiz2.0/
    MBRWiz /list
    mbrwiz /disk=X /active=1
    but, show massage

    Error 14: – Unable to save the MBR to selected disk

    Can you help me. Thanks.

    1. You must specify a disk number for the /disk parameter when using mbrwizard, such as /disk=1 (NOT /disk=x). What disk number does the mbrwiz /list command show for your removable disk? This is the number you want to use with /disk=

      You may also want to look at an application I just found called BootSage Disk Builder. It looks like it can automate the whole process for you.

  55. Finally found this article which shows how to create a bootable USB drive on XP! Thanks! That part worked fine, and my Acer Aspire netbook boots up from from the USB, but Win7 setup can’t install on C: drive. I get a message saying ‘Setup was unable to create a new system partition’ I’m trying to install over my existing WinXP install. Does Win7 need a NTFS formatted partition to install ? I realize this is probably off-topic, but, any suggestions ?

  56. Hi, i followed these steps, and have checked that the USB is first on BIOS. But then it says Reboot and select proper boot device. I have no idea what to do, please help!

    1. Hi James,
      Have you tried win2flash software to make your USB bootable, if not please check the under given URL to boot your system from USB and install windows xp, vista and 7 from a USB drive.

    2. @James: When you startup your computer, you will have a choice to boot from USB drive (press either F2 or F12, depending on your motherboard configuration). From then on, the Windows 7 installer will run from your USB drive.

  57. I got
    Error 64: Invalid Parameter: 2
    from MBRWizard.

    Was scratching my head for a while, but I finally figured out how to fix it at least for me: sort the MBR.

    First, I checked if the MBR was sorted.

    mbrwiz /disk=2 /IsSorted

    It wasn’t. So I sorted it.

    mbrwiz /disk=2 /Sort

    Next time I ran MBRWizard to set the partition as active, it worked.

    1. Have you tried win2flash software to make your USB bootable, if not please check the under given URL to boot your system from USB and install windows xp, vista and 7 from a USB drive.

  58. thx very very much… i was searching for hours but this tutorial was the only thing that helped me out…


  59. If you are getting the following error like I have:
    boosect /nt60 f:
    Could not map drive partitions to the associated volume device objects access is denied

    To correct this error, make sure you are running the CMD prompt as Administrator.
    1. Click on Start | All Programs | Accessories.
    2. Right click on Command Prompt
    3. Select Run as Administrator
    4. Now run the command
    d:bootbootsect /nt60 f:

    Thats’ it

  60. I followed the instructions to the word on my windows xp os with a 4GB SanDisk, but after I reboot and select the USB drive to boot with, I just get a blinking cursor and no install wizard

  61. Since this article was posted, we have gone one step ahead. Not me but some people who managed to install Windows Vista/7/XP to a USB or Flash Drive.

    I myself Installed Windows 7 64Bit to a USB Drive 7.46 GB in size. Even that the recommended size is 10 GB I was able to installed it on this USB and after booting Windows 7 From the USB and installing Device Drivers and configuring the Desktop I ended up with only 500 MB of Free USB drive space. And I gotta tell you I was really surprised that with the first attempt I got it working.

    But the technology is there and is Free. All you have to do is copy 3 files into the folder that contain the scripts that install Windows to USB and run the main script (a *.CMD File).

    Here is the link for anyone interested, and remember I did it and I'm none special with computers, just reading one of the script files got me dizzy but all you have to do is apply what is there:

    NT 6.x fast installer: install win7 directly to usb external drive…

  62. i got the same problem. i uset both this method, and with wintoflash. get the same result; computer boots the usb but then it stops at the blinking white cursor. What's this about?

  63. “cd Desktop/MBRWiz2.0/” doesn't work, says “the system cannot find the path specified”
    How do I get past this?

  64. “could not map drive partition to the associated volume device objects access is denied”

    Open cmd as administrator rather than simply opening cmd.

  65. Hi,
    I have a Laptop whose Optical Drive is not working. It has no Boot from USB Device option in the bios. So basically I am not able to use bootable flashdisk or Cd rom to Install Windows. I tried to install windows by removing the Hardisk and hooking it up to another machine and then returning it back to my Laptop. The problem is that I get the blue screen of death when it loads. I updated the bios to see if I could get the usb boot device option but alas no. I request for any ideas which might help me format My laptop.
    Thanks in advance

  66. Running bootsect /nt60 etc doesn't work if your target computer doesn't have the same architecture as the one you're doing this procedure on…like in my case, where the bootable dvd for some reason won't boot on my ubuntu laptop, so I had to resort to booting from a usb stick. My Ubuntu laptop is new (64-bit), and to create the bootable usb I have to use my mothers old WinXp laptop (32-bit). I want to install Win7 64-bit, so…

  67. Check if there is a newer version of bios for your laptop model. If yes, flash it. Most recent bios allow boot from USB

  68. Excuse my ignorance. The 'How to make a bootable Windows 7 usb' messages does not create a usable Windows 7 from USB…but rather a way to format a c drive from USB, is that true?

    I am trying to find a way to boot from a USB or a floppy so that I can format the c drive. I think my c drive needs to be formated as an 'upgrade-only' takes up too much disk space. I don't think the trail version of Windows 7 is not being erased, but rather 'added to'.

    Any suggestions?

  69. Yes, this tutorial only teaches you how to create a bootable USB for installation. It does not install Windows to the USB drive.

  70. You could try putting the drive in another system, making it bootable, then copying the installation files over into a subdirectory called 'Winstall' or something… then popping the drive back into the original machine, booting, switching to C:Winstall and starting the install manually.

  71. Hi Dean, I believe that you are mistaken. Linux Mint (or any other linux) are not programs, they are operating systems, like Windows 7 is. Difference is that mint is linux based operating system and 7 is windows based operating system.

    Also you dont need to do steps described above for preparing Linux USB instalation (most linux instalations like Ubuntu, Mint, Fedora, etc are distributed in form of an live CD/DVD which have all needed tools for installation including disc partitioning manager), all you need to do is download and use program unetbootin. Yes it is that easy with linux.

  72. hey. guys. if you want to create bootable flash drive use win2flash to make your flash drive bootable and you must have iso copy of your win7.. open the win2flash and look for the iso copy of your os (win7) and after that look for the drive where you want to store the installer..

  73. si inicia la instalacion, pero en el primer reinicio del sistema no se que hacer, porque si dejo el usb inicia otra vez la instalacion y si lo quito no sigue con la inatalacion y marca un error i/o. 0xc00007c

  74. start the installation, but on the first restart of the system is not to do, because if I leave the usb installation starts again and if not follow it off with the Installation and marks an error i / o. 0xc00007c

  75. Hi, i came to the step where i write the bootsect /nt60 I: but i get the error “no permission” shit, so i run it as admin, but then it says c:windowssystem32> and i have no idea how to get into my desktop, running cmd as admin :S help?

  76. Ok, that problem seemed to be fixed, but i occurred another problem, i cant copy the autorun to my flash… First it says that i need to be an admin to do that, which i am, so just click accept, and then it says i dont have the rights.. solution?

  77. i got the same problem as the poster you replied to but i DO have the MBRWiz2.0 at my desktop, how to fix this?

  78. when you get there, type “CD ” This goes all the way back to the root of the drive, so if your directory is C:windowssystem32 it goes back to C: then type in (For windows 7 users) cd:Users(Name of User)Desktop

  79. I have tried Windows 7 to the USB flash and it worked like a charm. however I am trying the same method to make the USB bootable for XP. I am running Windows 7 on my machine, but I need to create a bootable Windows XP USB for some other machines. Please help.

  80. For those who liked this, there is a way to make a completely running and bootable copy of windows 7 and xp, this is usually harder to find, if you like to tinker or have a corrupt or otherwise nonoperational hard drive, try this:

  81. I had the same problem, instead of writing 'MBRWiz2.0' ……..Type the name of the actual MBRWiz .exe file…mine is simply called MBRWiz…

  82. windows7 works great than xp…..if u need xp ,i will recommend u VMworkstation or virtual pc ….vwworkstation is $ but virtual is free…..u can use xp in windows7…

  83. Use virtual pc in your windows 7,install xp mode then install usb multi boot 10 to install xp to usb… this will work

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