How To Make Bootable USB Flash Drive using CMD (COMMAND LINE) without any software

Requirement:- 

8 GB USB drive   ,   OS files

Follow these steps:-

• Go to start icon at windows 7.
•  type "cmd" in the search dialog box on windows Start menu. 
• you see the command prompt program right click to your mouse on the program tan select run as administrator.
• now cmd open  in front of  you.
• using these commands.............
• 1. diskpart (enter)
  2. list disk (enter)
  3. select disk 1 (enter)  {you see the disk 0 and disk 1 shown in front of you with his total capacity you select disk 1 (if it is usb drive you can select throught its capacity)}
  4.  clean (enter)
  5. create partition 1  (enter)
  6. select partition 1   (enter)
  7. active  (enter)
  8. format fs=ntfs quick  (enter)
  9. exit
  10. exit
   
• you  finally done the booting usb drive now you are copy your OS files in your usb drive.