Hello. I am somewhat new to Mac (a little more than a month) and I have a 13-inch aluminum MacBook. Well I've been camping and so I've been taking lots of pictures with my fujifilm camera. But today upon plugging in my camera my batteries died, so I replaced them and plugged my camera in again. My camera name did not appear on my desktop for a while, but eventually it did, however a message came up saying something like, "the device PHILIPSCAM (that's my cameras name) is damaged..." it said You must back up your data and reformat the disk as soon as possible. The problem is I don't have a backup drive (unless there's one built in??) and I don't know how to reformat the disk. I assume it's referring to my computers files... am I going to lose everything? I'd really rather not... O.O Please help. Any advice appreciated!