+ 2 Votes Data recovery atsmar 2 years ago I've used both TestDisk and it's companion PhotoRec. I recovered 12 GBs off of a Sony 16 GB thumb-drive that I was sure had been fried. The thumb drive wasn't being recognized by three different PCs (two running XP and one running Win 7) and kept telling me it needed to be reformatted. I found this software while looking in Google and wow..., it worked. I had critical data on that Sony and I got all of it back. Once I recovered the data I reformatted the thumb drive. Good as new. You can find it here: http://www.cgsecurity.org/wiki/TestDisk.