I purchased an external harddrive to back up my entire student drive. The drive had to be formatted to be compatible with a Mac, and I did this with the customer support over the phone. Used basic copy and paste methods to put my information on the ehd. I triple checked to make sure it stayed there, by properly ejecting drive and plugging it back in. Had my mbPro wiped clean entirely, reloaded Leopard, and am now left with just basic applications and files. Plug in the ehd, and it shares the exact same information as my current wiped-clean drive. I made it as an exact replica of my information filled mac, and it is now an exact replica of my empty mac. All documents, music, photos, applications, etc. GONE. This information was valuable to me beyond words, and I need it back. Does TimeMachine have anything to do with this? I have never used this application, but upon plugging in my ehd, it asked for SOMETHING (which I don't remember). I will answer any questions to the best of my abilities, but it is my first year owning this hardware, and I fell in love with it until now.