I recently upgraded from XP to Vista on a Dell D820 and everything works fine. However the hard drive is almost full and I wanted to empty everything as part of the upgrade, so I had a clean hard drive but when I try to format the drive it says I can't as Windows is on the drive.
I have tried manually deleting files but although the hard drive is almost full I have only managed to find about 15gb of files and folders. Although Vista is taking up about 10.5 gb something on the machine is using up the rest of the 80gb drive.
Can anyone suggest how I can wipe this drive or find the missing folders?
Any help gratefully received.