Hello, new member here.
I keep a few older Macs around to run legacy applications and maintain old backups, including the one I am having trouble with. It's a Blue & White G3 350 MHz with 1 GB RAM and three hard drives. The upgrade processor and video card failed quite some time ago and I reinstalled the original 350 MHz processor and VGA card. The hard drives are set up as follows:
"Dr Who" - original 6GB Quantum Fireball on the ATA 66 bus. Mac OS 9.2.2 installed.
The other two drives are hooked up to a Sonnet Tempo Trio PCI card, ATA 133
"Mork" - 80 GB Hitachi Deskstar. Mac OS 9.2.2 and Mac OS 10.4.11 installed.
"Conehead" - 400 GB Seagate Barracuda. Mac OS 9.2.2 and Mac OS 10.4.11 installed for Classic use. Mac OS 9 will not boot from such a large drive.
I am also keeping an OS 9.2.1 installation disk in the DVD drive while I troubleshoot. That's the setup. Now the problem.
I can boot into any OS on any disk (except OS 9 on "Conehead") from a cold start.
I can restart into any OS 9 system from either OS X Startup Disk preference pane.
I can restart from the OS 9 CD into either OS 9 or OS X.
What I cannot do is restart into either OS X system from either OS 9 Startup Disk control panel. The chime sounds, the fans whir, but nothing else. No video, no nothing. I am forced to restart with the reset button on the front, hold down the 'C' key and boot from the OS 9 CD where I can then restart into any OS.
This problem began when I installed QuickTime 6.0.3 in OS 9 on "Mork". At that time, I didn't restart into that OS, but into the other OS 9 on "Dr Who". This may have caused the problem, or maybe it is just a red herring.
These are my efforts to fix the problem so far:
Reseated all four DIMMs. Tried each 256MB DIMM by itself.Swapped out the four DIMMs with some others that I had, two 64MB and a 128. Interestingly, when I tried to restart into OS X from OS9 with just 128MB I got a message saying that OX requires 256MB RAM. That's the most life I have seen after that restart procedure.
Other efforts, following the troubleshooting guide from Apple:
Reseated both PCI cards.
Zapped the PRAM
Reset the CUDA button
Reset the logic board
Repaired permissions in OS X
Ran 5 memory test series with Memtest
Ran complete diagnostics and repair with TechTool Pro 4. TTP found bad bundle bits for files that look related to startup: Startup Disk & Mac OS ROM on "Mork" & "Dr Who". Supposedly, these were repaired and the tests were marked "Passed".
I am considering doing a clean install on all of the drives or reformatting and started over, but I really would rather not. I am also considering just living with the issue since this Mac doesn't get much use.
Does anyone have any further suggestions? Is this a hardware or software issue? Does this set of symptoms sound like a harbinger of worse problems to come?
Thank you for reading all this. I look forward to your comments.
TL:dr - Can't restart into OS X from OS 9. Tried almost everything. Help!
Jim