Intially, I had my B&W G3 working, had panther installed, was trying to update, installer crashes in software update, I reopen, it freezes. I restart it, try it again, and I get a kernal panic. Try downloading the update from safari and installing that way, kernal panic. Install 10.3.1, it works. then try the combo update again kernal panic during installation. HD #2 no longer is recognized, sweet. Pull it out, plug in HD#1, now the hard disk is no longer seen, it worked before. Drive Setup doesn't see it. Tried pulling all the ram out(except for one), still doesn't see it. Where did my hard disk go? EDIT: I've found out that the problem is most likely the Hard Disk Controller Chip, they are flaky with additional drives in the Rev A B&W powermac. Can I work around it at all, or should I just go out and buy a new firewire enclosure and use it with this powermac?