Hello. A while back I bought a big external hard disk with USB 2 and firewire. I partitioned it into two parts, and at the time used one half to back up my PC, and anticipated using the other half in the future to back up my eMac. Well, my eMac now only has 1 gig of free space left (of an 80 gig drive) and I remember hearing it will start acting up if you don't leave enough free space. SO....i was on the phone with apple today and mentioned i would be backing up soon, and casually asked again about backing up to this disk in the FAT 32 format. The Apple tech guy said that I SHOULD have partitioned one half into FAT 32 and the mac side into HTFS. At the time when I was partitioning the drive an Apple tech told me this was impossible to do. This tech didnt think that was the case. I asked him what the problems were with backing up to FAT 32...he didn't say specifically but was saying things like he wouldn't do it personally..it wasn't designed to do that, and that he would be very cautious with it. So what's the deal? Should I move the data off the external hard disk to my PC, then initialize the hard disk with two partitions (FAT32/HTSF) and start over then move the PC data back and back up my mac? Is that possible? Or is it safe to back up mac data to a FAT 32 disk? Or do I need to buy a second hard disk (argg......i am poor....relatively................)?