Create bootable Usb for Windows 7&8

It is easy to create bootable USB drive for Windows 7/8.The advantage of using USB over DVD is that it is easy to carry, it increase the installation speed.By using USB you are also able to install windows on those systems which do not have any DVD drive.

Requirements:

Windows 7/8 installation disc
USB drive minimum 4GB of capacity (in order to store all the necessary files)

STEPS TO FOLLOW

Insert your USB drive and backup all its data.

Open command prompt. go to start > All Programs > Accessories > right click on command prompt and run as Administrator.

Now in the command prompt type > DISKPART

You'll redirected to DiskPart utility. Here type LIST DISK. It will show you a list of drives.Here DISK 0 is normally the Hard disk. Identify your USB drive and type SELECT DISK 1 (you can replace DISK 1 with your drive)

Now type the following commands one by one

CLEAN

CREATE PARTITION PRIMARY

SELECT PARTITION 1

ACTIVE

FORMAT FS=NTFS

ASSIGN

EXIT

Keep the command prompt window open, but you can minimize it for a little bit
You will now need your Windows 7 0r 8 Installation DVD. Put the DVD in your computer's DVD drive. Open up My Computer and note which drive letter is assigned to your DVD Drive and your USB flash drive
Go back to the command prompt window and type in K: CD BOOT (substitute your DVD drive letter for "K:" if necessary) and press Enter. Type CD BOOT again and press Enter. Lastly, type BOOTSECT.EXE /NT60 J: (substitute your USB flash drive letter for "J:" if necessary) and press Enter

Now copy all the contents of your Windows DVD into your USB flash drive.That's it. you're done. Now your USB is ready to boot on the system. Don't forget to set the USB boot priority from your BIOS.