Start your command prompt.
- Go to “Start” button and click. Write “cmd” then cmd icon will appear on the top of the panel.
- “Right click” on the cmd icon and click “Run as administrator”.
For windows 8 users:
It will good before going to next step that you should disconnect all other external hard disk, flash/pen drive etc. because accidently these drive can be formatted. So taking precaution is good. Only one pen drive with minimum 4 GB should be connected. Save all the data from the pen drive because it will be formatted in one of the following step.
After last step type “list disk” inside the command prompt and hit “ENTER”.
This will show all disk connected to the system like DISK 0, Disk 1, and so on with “Status”, “Size” , “Free” etc.. We can recognize the pen drive with size. Disk 0 will be the system disk in which the windows OS is installed. 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.
Now the pen drive has become bootable. Now all the files from root of Windows operating system setup DVD or ISO has to copy inside the pen drive root.
So open the Windows setup file from DVD or ISO and copy all file by selecting with “Ctrl+A” and paste it inside the pen drive’s root folder as shown in the figure.
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.