I have a bunch of pretty important files on my external hard drive. It has worked fine for the longest time now. I let a friend of mine hold on to it to work on music (we are in a music group together). Today he called me and said that he hasn't had it plugged into his computer (running vista) since mid october, but when he did today it said that it needed to be formatted. The files on the external are VERY important to us, but I can't find a way around it. Can someone please help me?