Here's what I'm having a problem with: G4 Sawtooth Encore ST G4 1.4 GHz processor upgrade Sonnet Tempo Trio PCI Adapter Combo ATA 133 with Maxtor 200Gb 7200 1 Gb memory OS 10.3.9 is installed on the Maxtor drive OS 9.2.2 on a drive that came with the G4 originally. I upgraded this machine about a year ago for my son. Also installed new graphics card, wireless card and dual layer DVD-RW. Absolutely no problem with the upgrades and it's been working great since. Until today. Now on booting up, the chime sounds, the apple appears, the gear wheel goes around but then a circle with a diagonal bar across it appears and the gear wheel keeps going around but nothing else happens. I reset PRAM, and pushed the button, still no go. Won't start from safe mode either. Also tried booting from external firewire back-up. When I got to the choose boot screen only the internal drive with 10.3.9 and the external firewire drive with 10.3.9 showed up. The drive with OS9 on didn't show. Could the problem possibly be that the drive with OS9 on has failed? The sonnet CPU upgrade requires the last version of 9 to be present, if I remember correctly. If this is the problem should I be able to sort it out by getting hold of a 9.2.2 system CD, booting from that and installing 9 on the Maxtor? I don't have one as the Mac originally came with 9.0 (and God knows where they are now) and I upgraded by downloads. I hope somebody manages to read this far!