I have a Gigabyte k7 triton series motherboard, and it has the cabability of backing up my hard drive... problem is, is when i run the backup it creates an image on it that took up 20 gigs, i want to sell this hd but i need to know how to remove the image so i can sell it as a 60 gig hd instead of it being only a 40 gb hd as its being recognized as now... any ideas ?