Installing windows 7 or 8 from DVD is very time consuming, instead of that we can create USB drive from which we can install windows, which is very faster. We need a windows 7 disc or ISO and USB drive of at least 4GB size. Follow the below steps to create a bootable flash drive.
1. Insert the USB drive in your computer
2. Now move on to Start Menu -> All programs -> Accessories , right click on the command prompt and then select 'Run as Administrator' option.
3. Now enter the command 'Diskpart'.
4. Type the command 'LIST DISK' , this will show you the list of disks connected to the system, you have to identify the USB disk
5. Assume the USB is DISK 1
6. Execute the following commands
SELECT DISK 1
CLEAN
CREATE PARTITION PRIMARY
SELECT PARTITION 1
ACTIVE
FORMAT FS=NTFS
//format will take some time according to the size of USB drive.
ASSIGN
EXIT
7. Do not close the command prompt. Now Insert the Windows 7 Disc in the DVD drive and identify the drive letter of Disc drive and the USB drive again from My Computer. Suppose the DVD drive letter is "D" and the USB letter is "H"
8. Now take the command prompt again and execute the commands.
D: CD BOOT
CD BOOT
BOOTSECT.EXE /NT60 H:
Here "D" is the DVD Drive letter and "H" is the USB drive letter.
9. Next we have to copy the content of Windows 7 content to the USB drive.
10. Now the Bootable windows 7 USB drive is ready. Just reboot the system and change the boot device to USB.
