I backup'd all my filed on my passport through my mac (Leopard). I then tried it out on my PS3 and nothing showed up. I emailed WD customer support but they haven't got back to me. I went to do some research and have come to the conclusion that it has to do with NFTS and FAT32 and what not, although I don't have an idea what that means. I ran Windows Parallel on my Mac as well and it won't detect the drive. Can someone help me out? Thanks