How to make a bootable pendrive using command prompt.

Making a pen drive bootable is possible in Windows7 & Windows8 operating system. Formatting a computer to install fresh Windows OS with a CD/DVD drive is not very good because it takes too much time to install fresh Windows operating system. There can also be a problem for many people that CD/DVD drive doesn’t work properly. So this can be a problem for them. Today laptop or desktop comes many USB ports. So there is no need of CD/DVD drive to format a system. Formatting is very fast and easy with flash drive/pen drive and also no software is required for this method. Windows7 or Windows8 command prompt can do the work with few lines of command. Just follow this tutorial.
Start your command prompt.

For windows 8 users:
Press “Windows key” and type "cmd". You will see the command prompt icon. “Right click” on the command prompt icon and click “Run as administrator” from the bottom bar.

Type “diskpart” inside the command prompt and hit “ENTER”.

After last step type “list disk” inside the command prompt and hit “ENTER”.

 In this tutorial Disk 1 is the pen drive (3855MB=4GB). This pen drive is going to be a bootable pen drive.
Type “select disk 1” inside the command prompt and hit “ENTER”. It will select the disk 1 (pen drive) for all coming steps. 

Type “clean” and hit “ENTER”. It will erase all the data from the pen drive.

Type “create partition primary” and hit “ENTER”. It will create a primary partition in pen drive.

Type “select partition 1” and hit “ENTER”. It will select the partition created in the last step.

Type “format=fs ntfs quick” and hit “ENTER”. It will format the pen drive quickly with NTFS file type.

Type “active” and hit “ENTER”. It will make partition as active for booting after restarting the computer. If this is step is missed then computer will not boot from the pen drive.

Type “exit ” and hit “ENTER” to close the diskpart and close the command prompt window.

Now  the pendrive is bootable.
 

After complete copy, the pen drive will be a bootable for Windows 7 and Windows 8 OS completely. You just need to “Restart” your computer. “Restart” your computer. When BIOS screen appears then press “F12” key. It will show the options to boot from CD/DVD drive, hard disk and pen drive. Just scroll down to pen drive and hit “Enter”. Your system will boot from pen drive. Now you can install windows OS.