Re: Kernel Panic during startup on iMac
Re: Kernel Panic during startup on iMac
- Subject: Re: Kernel Panic during startup on iMac
- From: Michael Cashwell <email@hidden>
- Date: Tue, 7 Aug 2007 22:30:22 -0400
It sure sounds like a motherboard failure. Perhaps someone with more
info could decompose the error message further. I doubt that the
Genius Bar is setup to do actual component-level diagnostics but they
could help with repair.
I don't suppose there was any unusual event when this started?
Lighting, power surge, etc.?
But at least you know at this point that it's a hardware issue and
that software updates and rebuilds aren't likely to solve it.
Good luck!
-Mike
On Aug 7, 2007, at 4:30 PM, Al Ciplickas wrote:
Thanks, Mike.
So I tried OF at startup and got these lines:
bad Bus Info CRC-16
Apple PowerMac8, 2 5.2.5f1 BootROM built on 04/06/05 at 12:46:02
etc.
Now, I assume the first line is a hint that I have a "bad Bus"
somewhere (cpu data bus?).
Would the Genius Bar (with an appointment) be able to do any
hardware diagnostics?
-Al-
On Aug 7, 2007, at 1:24 PM, Michael Cashwell wrote:
On Aug 7, 2007, at 4:07 PM, Al Ciplickas wrote:
Mike, I'll try the D feature on the CD _if_ I can ever get it to
work, but this system is 2 years old. Would the developer MacOS
Tiger DVD have the same feature?
I do not think so. Each system's diagnostic tool is tightly
coupled to that hardware. I've never had any success using
anything other than the install/restore disks originally supplied.
You might be able to take the machine to a Genius Bar (with an
appointment) and they might have the right disks.
Can I do anything in the Open Firmware screen to do testing?
This is just my understanding. I have no authoritative data here...
Not of the sort that the diagnostic tools do. There quite a bit of
OF/EFI code being pulled from the disks in those cases that's not
present in the boot FLASH. (The disks supply more than just a UI
to run the tests.)
-Mike
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