I have a 250GB firewire drive. I have a G5 iMac and an Intel iMac. I'd like to make bootable clones (about 60GB each) of each for off site backup, so two logical partitions. As far as I can see, the partition table scheme is determined at the physical drive level. But I need the logical drives to be Apple for the G5 partition and GUID for the Intel partition (please correct me if I am wrong) in order for them to be bootable. Is there any way around this, or do I need two physical drives after all?