To partition and format your drive, you can use Windows' built-in tool called Disk Management. You can repartition and format your hard drives in Windows using the Disk Management tool. In Windows 7, click Start. Next, right-click Computer, then click Manage. The "Computer Management" window will open.How do you erase a hard drive in command prompt?
Use the DOS command prompt to format or erase the hard drive. Do this by opening the command link prompt. You can do this by clicking the 'Start' button and choosing the 'Run' option. Type the 'cmd' command in the open field and press 'Enter' or click 'OK'.