I think my 1TB external HDD that's about 99% full just decided to went kaputski. Close to half of that amount is irreplacable. Any suggestions on how to revive it - even temporarily would be good. I've gone through a dozen power cycles, orienting the drives differently, setting it next to my window for 10 minutes (it's -6 outside), and a different cable. Nothing. My Disk Utility (on a mac) recognizes something plugged in, but can't read any properties of the drive. It can't even tell its SMART status, size, etc. But it does show the drive there. I jsut can't access it, or do anything to it. I really need help. Anyone, please?