Hi Guys, My rMBP has to go to the Apple Store for a repair, so the Genius sent me home to do a backup. It's time I did one anyway. It seemed easy when he told me, but now I'm at home, it's not looking quite so simple. I have a 500Gb external drive, and am running Mountain Lion 10.8.4, which has all the updates applied. I've read about the different disk formats, and Time Machine, but don't seem to be able to do it the way I was expecting. My first issue is accessing the backup with a PC. Is this possible? I know software wont work, but it would be nice to have access to my documents, photos, iTunes library etc. So before I try to go any further, do I have an unrealistic goal? If not, how should I format the external drive, and how should I do the backup? Can I use Time Machine, or do I need to use something else? Thanks.