- last post: 01.01.0001 12:00 AM PDT
You'd still need to be able to run the OS, and windows won't let you delete it.
If you have more than one hard drive or partition, control panel -> performance and maintenance -> administrative tools -> computer management -> disk management -> select drive you want cleaned -> right click -> delete partition
You can only do that if the OS is not installed on that disk. Also, if you want to use it again use the same utility to partition it to NTFS file format.
If you have one HDD, boot up your pc with the Windows XP disk in the drive. Go through to setup windows, and when you get to the part where you need to select something to install windows on, select your hard drive and delete the partition. Then, format it to NTFS, and reinstall windows.
You can find more info on google.