How To Install Windows 7 Or Windows 8 From USB Drive

Requirements:

  * USB Flash Drive (Minimum 4GB)

  * Windows 7 or Vista installation files.

Follow the below steps to create bootable Windows 7/Vista USB drive using which 

you can install Windows 7/Vista easily.

  1.  Plug-in your USB flash drive to USB port and move all the contents from 

      USB drive to a safe location on your system.

  2.  Open Command Prompt with admin rights. Use any of the below methods to 

      open Command Prompt with admin rights.

      

      * Type cmd in Start menu search box and hit Ctrl+ Shift+ Enter.

      * Go to Start menu > All programs > Accessories, right click on Command 

        Prompt and select Run as administrator.

  3.  You need to know about the USB drive a little bit. Type in the following 

      commands in the command prompt:

      First type DISKPART and hit enter to see the below message.

      Next type LIST DISK command and note down the Disk number (ex: Disk 1) of 

      your USB flash drive. In the below screenshot my Flash Drive Disk no is 

      Disk 1.

  4.  Next type all the below commands one by one. Here I assume that your disk 

      drive no is "Disk 1". If you have Disk 2 as your USB flash drive then use 

      Disk 2. Refer the above step to confirm it.

      

      So below are the commands you need to type and execute one by one:

SELECT DISK 1

CLEAN

CREATE PARTITION PRIMARY

SELECT PARTITION 1

ACTIVE

FORMAT FS=NTFS

(Format process may take few seconds)

ASSIGN

EXIT

      Don't close the command prompt as we need to execute one more command at 

      the next step. Just minimize it.

  5.  Next insert your Windows7/Vista DVD into the optical drive and check the 

      drive letter of the DVD drive. In this guide I will assume that your DVD 

      drive letter is "D" and USB drive letter is "H" (open my computer to know 

      about it).

  6.  Maximize the minimized Command Prompt in the 4th step. Type the following 

      command now:

D:

CD BOOT

  7.  Type another command given below to update the USB drive with BOOTMGR 

      compatible code.

BOOTSECT.EXE /NT60 H:

  8.  Copy your Windows 7/Vista DVD contents to the USB flash drive.

  9.  Your USB drive is ready to boot and install Windows 7/Vista. Only thing 

      you need to change the boot priority at the BIOS to USB from the HDD or 

      CD ROM drive. I won't explain it as it's just the matter the changing the 

      boot priority or enabling the USB boot option in the BIOS.