[G4] Perplexed need help

[Eric Wood]

Hard to be certain, but I'd suspect the power supply is overloaded. I  
think Apple's tend to be fairly low in output capacity, at least the  
one in my own G4 (digital audio) is. It was so bad, I had to stop  
using a second hard drive, since it was failing to be mounted at boot  
time. The drive itself is fine, as verified by its use in another  
machine.

First just zap the stored settings (like removing the battery and  
pressing the button on your motherboard), and consider using fewer  
devices. See if things clear up that way.

Eric W.

Am Oct 3, 2008 um 8:39 PM schrieb Robert C. Buitron:

> I have a G4 dual 1.25 GHz PowerPC, 2GB RAM (maxxed out), 4 internal  
> HDs (3 SATAs & original Seagate ATA), a SIIG PCI SATA controller  
> card 4-channel for Mac that can boot from any attached drive, and a  
> Sonnet Allegro PCI Firewire 800/1394B card. The OS is 10.5.5. I  
> boot up (or my startup disk) from the original ATA HD at this time.
>
> The problem is kernal panics and freezes.
>
> Some additional background:
> About a month ago I was downloading some Apple software updates  
> when I encountered some freezes that eventually turned to a kernal  
> issue as I did troubleshooting. I used the Disk Utility from the  
> DVD install disk to check the startup disk, which at the time was a  
> SATA connected to the controller card mentioned above. All internal  
> disks were verified. At one point using the Disk Utility on the  
> SATA startup disk, the computer hung up. This continued to the  
> point that I had to power down, power up, heard the drives spinning  
> but blank on my monitor- just black.
>
> I did some internal HD troubleshooting and finally determined that  
> it was the SATA startup disk that "seemed" to be the problem. I  
> removed it and swapped it with the original ATA HD directly  
> connected to the motherboard, and voila, my G4 was back to "normal".
>
> Now the perplexing problem:
> I was downloading the latest software updates from Apple, which  
> included the latest JavaScript,iTunes8, some remote security patch  
> (which I don't  use), and some other update that I cannot remember.
>
> I started the update and walked away as I knew this would take some  
> time. A half hour later I came back to a machine that had a kernal  
> panic and message that I needed to power down the machine. I did  
> and powered up and resumed the update with only two items remaining  
> of the starting 4. I walked away again as it was iTunes 8 and  
> JavaScript. When I returned I had another kernal issue but without  
> the power down message.
>
> The first few lines of the kernal issue are:
> "System failure: cpu=1; code=00000001 (Corrupt Stack)
> backtrace terminated- frame not mapped or invalid: 0x4AD8FF10
> Unresolved kernal trap."
>
> I'm not computer savvy, just enough to sometimes help myself and of  
> course sometimes to create problems. Any ideas, suggestions,  
> notions, preventive measures would help.
>
> The machine is up and running. I decided not to continue with the  
> software download. Seems that that was one of the contributing  
> factors.
>
> Thanks for your help.
> Rob
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