How to make pendrive bootable using command prompt, without any software

There are lot of software available on the internet to make pendrive bootable, but we can make pendrive bootable without using them, simply use cmd (command prompt).
To make pendrive bootable follow these steps..

                                                       1. Open cmd as adminstrator .
{in window 7 type cmd in search box, for window 8 press window key + X and select command prompt (admin) }
                   

       

2. now type diskpart hit enter.

3. Before this step remove all other external hard drive only one pendrive should be connected which you want to make bootable.
 Now enter list disk and hit enter.

4. Now enter select disk 1 and hit enter.

5.now enter clean and hit enter.

6. now enter create partition primary and hit enter.

7. now enter select partition 1 and hit enter.

8. now type format fs = ntfs quick and hit enter.

9. Now enter active and hit enter.

10. Now enter exit and hit enter, it will close the command prompt. DONE!!!
now copy and paste all files from windows setup folder and install new window from bootable pendrive. :)