I am reading that sometimes they go bad. My tiger disks aren't being read. My son has a file with 10.5 op system on his PC and I want to try to put it on my g5. Problem is he doesn't have a firewire port-at least not that we can find! It's like a Dell Latitude D520- or 530. Anyway. How can I get something that is 7gs to my G5 computer w/out a firewire?