How to Create a Bootable Windows 7 or Vista USB Drive

• Steps

1 Plug-in your Flash Drive. First plug-in your USB stick to your USB port and copy all the content to a safe location in your hard drive .
2 Run Command Prompt as an administrator.
3 Using the Diskpart utility find the drive number of your flash drive. To do so, type in the following commands in the command prompt:

DISKPART

Running DISKPART will display the version of DISKPART you are running and the name of your PC.
Run the following command:

list disk

Your Disk Number will be listed. Note it down as you'll need this in the next step.
Let us assume that the USB Drive is Disk 1 but if it was listed as Disk 2 use Disk 2 instead.

Format the drive by executing the following commands step by step. Make sure you replace Disk 1 with the proper Disk number.

1=select disk 1
clean
create partition primary
select partition 1
active
format fs=NTFS QUICK
assign
exit