Make Bootable Pen drive with Windows 7 or Windows 8 by command Prompt

To make pendrive bootable by win 7 or 8

open command prompt as administrator

1) windows\system32\> Diskpart

***to know how many disk are available
2)Diskpart>list disk

**to make particular disk partion
3)diskpart>select disk 1

***first step to partion
4)Diskpart>clean

***make format
5)diskpart>format=fs ntfs quick

***make active
6)diskpart>active

***exit
7)diskpart>exit

***copy the os from the location and paste it in the formatted pendrive***

**check link for details
makebootable pen drive