IBook G4 hangs on startup - hangs in single-user mode

My wife's iBook is in a bad way. It hangs on start up (during the grey apple), and hangs when fsck reaches the catalog check. I can't start from the optical drive as it is not responding either. I have tried zapping the PRAM and restarting with the AE card removed (there is no other 3rd party hardware) but neither of those made any difference. It won't boot in safe mode. I also tried booting in target mode to see whether I could mount the disk and tackle it with Disk Warrior from my desktop G4 but it won't boot that way either, although my desktop can see the iBook in System Profiler. Is there anything else to try before calling in the engineers? I wondered whether I could try booting from an external drive and setting DiskWarior to work that way. Would that work?
Thanks,
Andy

Following up my own question, the iBook will not boot from the external Firewire drive. I know that the drive is bootable because I have booted my G4 desktop from it, but the iBook just gives me the folder with a ? indicating it can't find a bootable disk. Any suggestions? I think it is engineer time...
Thanks,
Andy

Similar Messages

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    Hi, am panicking here so help really appreciated!
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    backtrace:...lots of numbers here...
    Proceeding back via exception chain:
    exception state:....lots of numbers here...
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    <Edited by Host>

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      4. Quit DU and return to the main menu.
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