Re: Kernel Panic during startup on iMac
Re: Kernel Panic during startup on iMac
- Subject: Re: Kernel Panic during startup on iMac
- From: Terry Lambert <email@hidden>
- Date: Tue, 7 Aug 2007 12:48:36 -0700
On Aug 7, 2007, at 12:27 PM, Al Ciplickas wrote:
I have a 2005 iMac with a G5 and a 20" screen - nothing else fancy.
About 2 weeks ago, I started getting Kernel Panics while starting
up. Tried everything obvious, nothing seemed to work. It won't run
from a CD (DVD), but I can hold down the Option-key and see the
startup volume. Also, I was able to get it into Target mode (T) and
using firewire, save most of my files.
Then I reinstalled (upgrade mode) the system over the firewire
connection. It came up finally, but just a few times. Now it's
back to Panic mode again.
Does anyone know what I might do to locate the problem? It reports
"Unresolved kernel trap (cpu0) 0x700 -
Prog DAR=0x00..003696E000 and PC=0x00..00D59C8.
This is a partial panic message indicating an attempted access of an
unmapped page at supervisor mode.
This type of failure can be anywhere, and since data layout will vary
based on what you have installed on the machine, a partial panic
message like this is useless for problem diagnosis, since there isn't
even version information to indicate whether the PC is in the kernel
or in a KEXT.
Most likely the full panic message will implicate a third party KEXT;
if so, holding down the shift key while booting will likely make the
problem go away, unless the KEXT author had messed up their plist and
claimed their KEXT is needed to mount the root device.
You should file a bug wit the full panic information at:
<http://developer.apple.com/bugreporter/>
-- Terry
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