My 2nd hard drive is what has all my games on it. I couldn't get one game to work and I've seem to messed some file pathways up. I figure fresh every thing will work cause frankly i'm tired of messing around with patching things back. It said it wouldn't let me format it cause there is a system partition on it. I don't recall ever putting one on it. I had just got the damn system to recognize it was even installed.