Pendrive Bootable

Cmd

Run  administer

Open system32 cmd

Note : You need to Follow Same Steps in order to make bootable USB pendrive for windows 8/8.1/vista.

Commands Used For making bootable USB :-
a) diskpart
b) list disk
c) select disk 1 ( if your USB is of no. 2 then use "select disk 2")
d) clean
e) create partition primary
f)  select partition 1 ( if your USB is of no. 2 then use "select partition 2")
g) active
h) format fs=ntfs quick (for quick format) otherwise you can use "format fs=ntfs".
i) assign - as soon as you type this command your USB drive name will change automatically.
g) exit - to exit from diskpart not from command prompt.

2) extract your windows 7 file(.iso format) using winrar.
If you don't know how to extract a image[ISO] file. Then refer Above links.

3) After successful extraction you will see that there is a bootsect executable file that needs to be executed.

4) To execute bootsect.exe we need to apply following command.
  cd (drive_name)-here name of the drive is the drive where you    have extracted windows 7   (iso file)
  cd boot
  bootsect.exe/nt60 J: (here J: is the name of the usb drive).

5) after all this steps you just need to copy all the content of windows 7 folder into usb device folder.

Note : You can make bootable USB only for windows(32 bit) if you are using a 32 bit operating system.
To make bootable USB for 64 bit you need to use 64 bit laptop.

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