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Sunday, April 24, 2011

How to create a bootable USB thumb drive for Windows 7 64bit using Windows XP 32bit machine.

We have the ISO of the Windows 7 64bit and want to install it using the USB Thumb drive installation method.
We have access only to our old Windows XP 32bit OS.

Use the standard MS tool to format the USB Thumb drive [1].
It will failed at the 100% with an error message saying:

Status: Files copied successfully. However, we were unable to run bootsect to make the USB device
bootable. If you need assistance with bootsect ....#truncated#

Download and install the EasyBCD for your WinXP 32bit [2].
The installation will copy the bootsect.exe tool that can be used on winXP.

Run the bootsect.exe to make the USB Thumb drive bootable. The 'E:' is the driver letter assign by your XP!

C:\Program Files\NeoSmart Technologies\EasyBCD\bin>bootsect.exe /nt60 E:
Target volumes will be updated with BOOTMGR compatible bootcode.

E: (\\?\Volume{ba063d8e-7111-11e0-b640-aafb6b9edf9e})

    Successfully updated NTFS filesystem bootcode.

Bootcode was successfully updated on all targeted volumes.

As last, unmount the USB, reboot the system, change the BIOS and start the installation.


[1] Windows 7 USB/DVD Download Tool

[2] EasyBCD

For troubleshooting purposes:
How To Boot And Install Windows 7 From USB Flash Drive

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