RE: CS 1.2.1 Kernel panic during install/boot on DualG4

Subject: RE: CS 1.2.1 Kernel panic during install/boot on DualG4
From: Douglas Davenport (
Date: Thu Dec 28 2000 - 15:30:22 MST

I had similar problems in my dual G4 with a DVD-RAM drive. I assumed it was
some problem with the DVD drive. I managed to get the install started by
copying yaboot, yaboot.conf, vmlinuz, and the compressed ram disk image (I
can't remember the file name), all to the MacOS system folder. I then edited
the yaboot.conf file to load all from the hard disk instead for the CD. I
then started yaboot via Open Firmware. Once the kernel was up and the
install program running it read from the CD fine. After the install I
reworked the yaboot.conf to load from the second hard drive. If you have any
questions, please feel to contact me for details.


-----Original Message-----
From: Jim Jagielski []
Sent: Thursday, December 28, 2000 5:15 PM
Subject: CS 1.2.1 Kernel panic during install/boot on DualG4

Ahh... the joys of non-fully supported h/w :)

To the point, I've a brand-spanking new Dual G4 (the 450 species)
with an Adaptec 29160N SCSI card and 512M of RAM (all else
pretty much on spec). Trouble is, the CS 1.2.1 boot CD refuses to
finish the boot sequence, bailing out with a kernel panic not long
after the USB and SCSI setups.

The error (somewhat edited, full backtrace available on request):
 Unable to handle kernel NULL pointer dereference at virtual address
   00000042 (error 40000000)
 TASK = c01d4270[0] 'swapper' nn->pgd c01d2000 Last syscall: 112
 Kernel panic: kernel access of bad area pc c0129a14 lr c013156c address
   42 tsk swapper/0

I'm using the simple method of booting from the CD-ROM (via 'c'
keyboard selection). The install CD-ROM is known good, since it
works dandy on a PB G3 ('99).

Any hints or ideas?

   Jim Jagielski   [|]   [|]
          "Casanova will have many weapons; To beat him you will
              have to have more than forks and flatulence."

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