B&W Panther Upgrade Failed

idfeat

Registered
Hi,

I recently acquired a used B&W PowerMac G3-350. This is a Rev. 2 model with the updated IDE controller and DVD drive. It came with stock parts, except for a RAM upgrade that boosted it from 64 to 64 + 256 = 320. I received this computer with Jaguar installed on it, with proper firmware 1.1f4 I have a legal copy of Panther laying around, and since I still had one more license on it, I decided to try upgrading the B&W from Jaguar to Panther.

Since I knew it had the correct firmware, I went ahead and attempted to boot the computer from the disc. It booted from the disc fine, but in the first 20 seconds or so, when the installer says "Reading packages...", the computer locked up and gave me the "you need to restart" grey message box. I restarted it again from the disc, but the same thing happened. I ejected the disc, and attempted to have the computer boot up normally and load up Jaguar, but now it won't boot up at all. It will display the normal Jaguar start up screen (white with grey logo), and after about 10 seconds, it will freeze, and the white/grey logo screen will have a bunch of weird horizontal white lines across it.

I have tried the following:

- Zapped PRAM numerous times
- Restarted with command/option/o/f into open firmware and typed reset-nvram (ok), then set-defaults (ok), then reset-all (ok)
- Swapping out RAM sticks

None of these solved the problem, and I still cannot boot into Jaguar from the internal hard drive. I also still cannot boot off the Panther disc.

My B&W is dead in the water. After two days of research and attempts, I still can't seem to find much documentation on the internet for this specific problem. Hopefully, someone here will be able to help me out. All help appreciated, and much thanks in advance!
 
Have you tried hitting the PMU/CUDA button inside the G3? There's a small button inside that you need to push for only 1 second. And this must be performed with the machine turned off. This is sometimes a last resort method that can bring up a Mac once it falls into a comatose state.

For example, I had an issue with an old Motorola StarMax 4000 PowerPC Macintosh clone that would not turn on at all as if the power supply had gone dead. However, when I pushed that button inside and then turned on the Mac, it came to life. I eventually found out that this particular Mac clone won't show any signs of life if the internal battery goes dead. (Of course, the second the machine was shut off and the power cord was removed, it would stay dead again requiring the PMU/CUDA button press.)

Give this method a try and see if it works for you. Good luck!
 
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