It looks like the 80G drive in my G4 minitower failed. After running DiskWarrior several times and attempting to rebuild the partition table with pdisk today, I still wasn’t able to recover it. When I run Disk Utility in Panther, it says S.M.A.R.T. diagnostics indicate the drive is failing, plus it also makes clicking noises when I reboot.
Luckily, I have everything from that machine archived, since I haven’t used it actively since I got my PowerBook. I installed Panther on the secondary drive in that machine.
Tomorrow I plan to remove that drive and either leave only the secondary drive or replace that drive with a 45G which is now in an external firewire case.