I've run into this problem on at least 3 Power Mac 6100 machines that I've come across lately where I find it virtually impossible to remove the built-in hard disk. The stock drives are secured inside a sled that has a latch which on other model Power Macs allows you to release the disk when you press on it. Not so with the PM 6100 series, or so it's been in my experiece. No matter which way I push or pull on the latches, these drives simply don't want to budge! I've removed &/or replaced all kinds of hard disks in my day, but the ones in the PM 6100 have me stumped. Does anyone have one of these machines who can tell me the trick to getting the HDs out?