how to format my hard drive from command prompt

select partition with select partition n command (where n is partition number).select disk with select disk n command (where n is disk number).run diskpart.exe (it comes with Windows Vista/7/8, maybe some older too).Here is article about this tool: link to It has 'own' command line that accepts diskpart commands. You can use diskpart command line utility. You can make the volume mountable again by creating a volume

From mountvol /?: /p Removes the volume mount point from the specified directory,ĭismounts the volume, and makes the volume not mountable. Make sure you alter the batch files at the top before running them, to make sure you are mounting/unmounting the correct drive.ĭo NOT use /D, which only removes the drive letter assignment. Run the command mountvol and take note of the volume name above the drive letter that you want to mount/unmount (e.g. Tutorialįirst, open Command Prompt as Administrator. Upon doing some research, I found THIS Instructable, detailing how to mount and unmount drives using the Windows command MOUNTVOL. I AM NOT responsible for any damage that you could possibly cause to your computer or laptop by trying anything outlined below. If you are installing Windows, continue with the Windows Setup process.DISCLAIMER: You are responsible for your own actions.

To select the drive and reformat it, type select disk # (substitute # with the actual disk number e.g.

To identify the disk drive to reformat, type list disk and press Enter key.

In the Command Prompt window, type diskpart and press Enter key.

From the Windows Setup screen, press Shift + F10 key to open a Command Prompt window.Select the Windows installation DVD or USB in the menu and press Enter key.Power on the PC and tap F12 key until One-Time Boot Menu appears.Power off the PC, and insert/connect the Windows installation DVD or USB key.

Please ensure all important files have been saved to a different hard drive or storage device before following the instructions below.Ĭonverting to GPT format using Command Prompt in Windows Setup Caution: Converting a disk drive from MBR to GPT or vice-versa will erase all data from the drive.

How to format my hard drive from command prompt