I hope someone can answer a question I have. The thing is, I just received my new MacBook Pro (which I love, by the way ) and when I plugged in an external hard drive to configure Time Machine, I got a message saying that it needed to be formatted. I actually don't want to format it, if it's possible. Anyway, I could format it, but I would like to know what File System it's going to use. Basically, it is currently formatted as FAT32, which is cool because I can backup information from PC's and Mac's. If using it with my Time Machine means that it will be formatted as some Apple file system, then I don't want to do it, but if it can remain as FAT32 and still be used with Time Machine, I think I cand really take advantage of it. Well, thanks in advance. Any help will be appreciated.