How to make Pen-drive bootable without using any software - make your pen-drive bootable by Command promt.

To create a bootable USB flash drive you need to follow the mentioned steps carefully.

1. Insert a USB flash drive in your running computer
2. Open command Prompt. as an administrator
3. type "Diskpart" press enter
4. type "list disk" press enter
5. choose your flash drive "check the storage capacity" assume your flash drive is "disk 1"
6. then type "select disk 1" press enter < 1 is your device letter>
7. then type "Clean"
8. type "create part pri" press enter
9. type "select part 1" press enter
10. to format the partition type "format fs=ntfs quick" press enter
11. then type "active" and press enter
now type "exit" and press enter

now you can manually copy/paste the windows files/setup from your CD/DVD to your flash drive.

you can directly copy the window files from your CD/DVD using below command

"xcopy G:\*.* /s/e/f H:\

where G: is your CD/DVD Drive latter and H: is your USB Drive latter
for better understanding please copy the above command and check the spaces between the characters..