This operation assumes your machine can boot from a USB enabled device. Check your BIOS to make sure.

You also MUST have a DVD/ISO copy of OS/PE to install the source files from a DVD or a source folder to a USB flash drive:

1. Insert your USB flash drive and enter the following commands:

(Please note this list assumes that your USB flash drive will be seen as disk 1.
To confirm that it is type “list disk” after you’ve entered the DISKPART command) Otherwise you may wipe a different drive (such as your hard disk drive!)

2. Type:

diskpart

select disk 1

clean

create partition primary

select partition 1

active

format fs=fat32

assign

exit

At this point your USB drive is formatted. DO NOT format the drive from within Windows. You MUST have a DVD copy of Vista to copy the source files from.

The final preparation step is to copy the installation files to your flash drive, this can be done by running the following command:

(Please note D: is the drive letter for the source files and E: is the drive letter for your flash drive, if they are different on your system you need to change them accordingly).

Exit DISKPART. Type:

xcopy d:\*.* /s/e/f e:\