My daughter has a 5 year old 13" MacBook (black) with a 250 gig hard drive that seems to be dying (increasingly frequent "needs to be re-started" errors on boot up). I'd like to replace it, and would like recommendations. The one that is currently installed is a Fujitsu MHY2250BH. I don't know what size limitations her bios might impose, but if I'm going to replace it, I'd like to get her something a little larger, say 320 or 500 gigs.