Back when I had my 3400/180/1.3/144, I had LinuxPPC running off of a SCSI Jaz drive. I think it was the 2000 Q1 release, and it worked great. The Jaz drive was horribly slow, though. The only thing that didn't work under LinuxPPC was the modem/ethernet card. I had to use an external modem. Maybe Yellow Dog has that supported, but if it doesn't, I'd say give LinuxPPC a try.