OK, this is a bit of a weird one...and a bit long so please make
yourself a cup of coffee first...
I have a 600MHz Snow G3 iMac running 10.2.8. Yesterday I was trying to
track down a file on the system drive and couldn't find it. It wasn't on
any of my backups so I decided, as a last resort, that I'd use the
scavenge option in DiskWarrior 2.1 (which works with Jaguar, but
veeerrry slowly). No such luck, but while running DW it found a few
directory errors and I decided to rebuild...
...bad move. When I restarted, I was immediately greeted with a kernel
panic. And the following saga began...
1) Restarted again....panic
2) Pulled all USB devices out except mouse and keyboard....panic
3) Zapped PRAM (5 times)...panic
4) Booted DW CD again and rebuilt...rebooted...panic
5) Booted from iBook running Panther via target disk mode just to check
that it wasn't some kind of motherboard failure....started OK
6) Braced myself for a reinstall of the OS and prepared to boot into OS9
to do one last backup (to catch anything not backed up since the last
run of Retrospect 6 days ago)
7) Restarted machine having forgotten to switch startup disks....machine
tried booting into Jaguar....booted OK!
So somewhere between steps 5) and 7) the disk repaired itself and I
carried on using the machine, having restarted a few times just to
check, for the rest of the day.
Today I decided to record some stuff off the radio for burning onto CD
for a car journey tomorrow, using ???. This used to crash the iMac
occasionally but since upgrading OSX to 10.2.8 has been OK. Not
today...machine locked solid and I had to hold the power key down to
restart...
...back to the kernel panic again....gawd!!!
This time I also tried starting in single user mode and got:
"Recording startup extensions
Error: Extension archive has a bad checksum
Error: Couldn't unpack multi-extension archive
panic(cpu0): Unable to find driver for this platform (PowerMac 4.1)"
followed by a stack tracedump. Googling this error came up with many
tales of woe and plenty of potential causes but nothing in the way of
someone who had this error but managed to fix it.
What does everyone think? Two difficult issues that have resulted in the
same panic (I've seen panics before, but never on boot-up), or an
indication that the drive might be on its way out?
Meanwhile, I'm going through the above procedure again to see if the
machine comes back to life.
Neil
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