I just sold my macbook pro, and I have been using an external hardrive to back up important files. By mistake I turned it into a timemachine hardrive while i still owned the mac. I have NO macs in my house only windows since i just sold it, and windows cant read Timemachine external. I can go to the apple store and format my drive to FAT32??? (not exactly sure if that is right), will this delete everything on it? If so, then I have no idea what to do, because I need those files.