CREATE BOOTABLE USB USING CMD

Insert your Pen drive and press the start button.

Type cmd and right click on it and start this with administrator right.

Now on the command prompt, type the following commands

Diskpart

List disk

// List disk command will generate the list of Disk connected to your computer like Hard disk and USB disk. This will be like in figure.

After this

select disk 1   // in my case USB is as disk 1

clean

create partition primary

select partition 1

active

assign

format fs=ntfs quick // Format Filesystem=NTFS quick(don’t use Quick for deep format, just use format fs=ntfs)

exit