So I've never used mine after owning it for 2 years (I know right!) So I basically just went to devices, clicked Macintosh HD, and copied Applications, Library, System, User Guides and and Information, Users, and Installations log. I'm asking because my warranty is still up and going to let Best Buy clean my computer. They'll send it off and it'll be gone for a week. Along with cleaning the fans they said they likely will wipe the computer. SO if I put all of that on the harddrive, will I be able to bring it all back? I'm so slow on stuff like this. I just use memory sticks for my writing, I've never tried to back up the whole thing before. I have so many files but not sure what to delete, it all seems useful. But I suppose I can pick and choose what I bring back, as wouldn't bringing back everything kinda defeat the purpose of memory wiping it? Just wanna know if anyone has a how-to guide about the Passport for Mac Hard drive.