I have a 500GB external HD I use for transfering files between computers at home and school. This consists of a standard 2.5" HDD I had (from another external drive where the enclosure didn't work) and threw into a new enclosure I bought. Everything was fine for the last few months, but then all of a sudden it stopped working. I didn't unplug it without ejecting it, the power didn't go off, there wasn't (far as I know) a surge. It's working, I go take a break and eat, come back and it's not.
I restart the computer and now it keeps saying I have to format the disc before I can use it. Even better, although the drive is visible to the OS, it doesn't have the whole "your drive is x% full" or "100 of 200 GB" used or anything like that.
Now I'm pretty sure I have everything from it backed up elsewhere so I wont lose anything if I do have to format it. But I'm hoping that maybe someone has some ideas on how to get around that or get the data off it before I do.