How to make bootable pen-drive?

1. Plug your USB storage device and run CMD and execute the following commands one after another.
o Diskpart Run Disk partition utility
o List disk To get disk index that is used to perform disk partitioning.
o Select disk 1 Selects disk to perform disk partitioning.
o Clean Flush your existing all USB drive’s partitions.
o Create partition primary Creates a partition as primary partition.
o Format recommended Format your USB drive with recommended parameters. (No need to worry about file system format)
o Active Set the partition as active to hold bootmgr.
o Exit To quit Diskpart utility