The background: my Sony Vaio laptop originally had a partitioned hard drive (c: & d: drives) and was running Windows XP. I had problems with a root kit virus & eventually had to uninstall XP, reformat & install Win7. This was done on what was the d: drive to preserve the c: drive contents. On installing this, the d: drive got renamed to c: and vice versa.
The c: drive now contains Win7 and when I boot the computer, it acts like a dual boot system, with option to boot old XP (corrupted) or by default, the new Win7.
I now have all the programme files & OS on c: drive, and want to clear off the d: partition (which has all the old XP stuff on it) to free up some disc space. I've tried formatting the d: drive but it won't let me. I've tried altering permissions to delete files individually, but even with admin permissions, can't do this either.
Anyone got any suggestions? I don't want to download any 'dodgy' software to do the job!