[G4] Dual 1.25 MDD G4 won't boot OS X. Any ideas?

[Eric Smith]

Hi Mark,

FW 800 has a different connector than FW 400, for example see:
http://computer.howstuffworks.com/firewire4.htm

For your booting problem, have you tried zapping the PRAM
(see http://support.apple.com/kb/HT1379) or resetting the PMU?

Are there disk maintenance tools on your test disk - something
that can check the integrity of the root filesystem? If not,
an application like DiskWarrior might be of help.

Eric S.

Mark Steele wrote:
> This is a dual 1.25GHz MDD G4 (I think it has FW800, not sure, how to 
> tell???)
> 1.25 Gigs RAM.
> Couple of HDs and two internal optical drives.
> 
> Problem: When booting into OS X (10.5.x) the machine locks up at the 
> grey screen with the Apple logo.
> Booting into the Hardware test disk (supplied with the machine) works 
> fine and all tests pass, even letting
> it loop overnight.
> Booting, installing and running linux does work (but can be somewhat 
> flakey) The ones I've tried are
> Fedora 7(?), some version of Ubuntu (which doesn't seem to be supported 
> with the latest version so
> it is probably one back from that).
> 
> I've re-arraged the RAM chips (using the same slots as before) and the 
> problem still exists. Any attempts
> to boot into OS X fails. This machine has had the same hardware for 
> several years and booted and worked
> just fine, then one day it just locked up and wouldn't boot again.
> 
> Any ideas on what to try next??
> Thanks,
> -Mark
> 
> 
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