Open the Command Prompt. You will need to run Command Prompt as an Administrator. Right-click on it and select Run as Administrator. You may need to enter the Administrator password.

  • This method will create a USB drive that is bootable. You can then copy the contents of an operating installation disc onto the drive to create a portable installation drive.
  • This method only works in Windows Vista, 7, and 8.



1.At the command prompt, type cd c:windowssystem32 to change the directory to the Windows system32 directory. Ensure your USB drive is plugged in and typeDISKPART and press Enter. Then type LIST DISK and press Enter.


2. You will see a listing of the disk drives connected to your computer. Find the disk number of your USB drive and type SELECT DISK [USB disk #], where “[USB disk #]” is the disk # for your USB drive. It should now state that your USB drive is the selected disk. If you’re not sure what disk is the USB disk, eject the USB drive, perform step number 2 again, connect the USB drive again, and compare the results. Usually the USB drive will be the last drive.

3. Type in the following commands, one by one, pressing Enter after each command.


CLEAN

CREATE PARTITION PRIMARY

SELECT PARTITION 1

ACTIVE

FORMAT FS=NTFS 
(may take a couple minutes, depending on the USB drive size)

ASSIGN

EXIT

4.NOW YOUR USB IS BOOTABLE

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