My Gigabit ethernet DP PowerMac G4 has been upgraded quite a bit—1.5 GB RAM, Pioneer DVR-105, SIIG USB 2.0 PCI card, ACARD ATA-100/133 PCI card, two 80 GB Maxtor HDD, and an ATi Radeon Pro 9000 AGP card.
ATi recently released an update for Mac owners of ATi Radeon cards running Mac OS X 10.2.8.
After installing the updated Radeon drivers, my PowerMac is DEAD.
First, upon re-boot, I get a good old-fashioned blinking System folder. After a few seconds, the blinking stops and the gray Mac OS X 10.2 logo appears.
Second, Mac OS X 10.2 boot screen displays for about a minute. Then the gray "prohibited" boot screen appears. (FYI, this is a gray "no" symbol—circle with a line through it.) I have never, ever, seen the gray "prohibited" screen before.
I have tried booting in Single User Mode, but I cannot. The "prohibited" screen appears before the PowerMac can enter Single User mode.
I have tried starting the PowerMac in FireWire Target Disk Mode, but while holding down the "T" key, the PowerMac shuts itself off.
I have tried zapping the PRAM (COMMAND+Option+P+R). No dice.
I have gone into Open Firmware and reset the NVRAM. No dice.
I have gone into Open Firmware and entered the command to force the mac to load the drivers in the ROM of the video card. No dice.
I have undone the above. No dice.
The PowerMac will boot into Mac OS 9. I booted into Mac OS 9 and tried running DiskWarrior on the drive. DW made some direcotry repairs which helped a little. When I tried rebooting into Mac OS X, the blinking System folder was gone; however, it still would not boot. Now, after the gray Apple boot screen appears, I think I get a kernel panic (two small black boxes appear above the Apple logo with garbled text).
At the moment, I have booted the PowerMac from a TiBook in FWTDM. This reverse FWTDM works just fine. I am attempting to use my TiBook's OS X 10.2.8 System to repair the permissions on my PowerMac's OS X 10.2.8 drive.
Any ideas what on earht is going on and how to fix it?