My Mac has got 2 internal hard drives - 115GB Solid State drive (contains OS X + apps) - 1TB regular hard drive (contains music, movies, photos) Recently I've been getting error messages when moving big files around on my 1TB drive, so I decided to run Disk Utility. Apparently, the disk's S.M.A.R.T. status is 'bad'. What are my options? Any help would be greatly appreciated. P.S. I have a Time Machine back-up, but don't quite know how to check if it's actually a 'good' back-up. Wouldn't like to get a new drive only to find out the back-up was corrupted as well. P.P.S. It's not an Apple stock drive. It's a Samsung drive I bought at OWC (still under warranty, so I can get a replacement for free, but I'd like to keep my data one way or the other).