I got a 750gb external drive for storage. (movies, pics, video, installation files, etc etc - I doubt I'll be running Apps from it) . I have a MBP, and a Desktop - which I run OS X 86 about 90% of the time. I'm sorta lost as how i should format/partition it. My current external is 250 all FAT32 (so I can use the files on Vista and OS X) In OS X, is there a downfall to using Fat32 vs. Mac OS X Journal?