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Re: Unable to boot after lockup



On Sat, Jan 26, 2002 at 01:53:45AM -0500, Michael Hope wrote:
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> Sorry if this is the wrong list, but I've hit an interesting problem.  My
> iBook Firewire locked up while I was working in Emacs, and now the machine
> won't boot any more.
> 
> Specifically, I was in KDE with Emacs and a few shells open writing some
> code.  On one operation the Emacs screen stopped painting.  The shells
> would still paint, but no apps would load.  'ps' stopped one shell
> working, then the other stopped.  I've seen similar before when the HDD
> wouldn't spin up ages ago.  After powering down, the mac 'Can't find a
> startup disk' icon flashes.  Booting the Mac restore CD and running the
> disk manager shows the main drive as uninitialised, and Apple System
> Profiler shows the disk as there but having no partitions.  I can hear the
> disk spinning.
> 
> The machine is running Mac OS 9.1, a recent Debian/unstable, a stock
> 2.4.17+ext3 kernel, and yaboot 1.3.3 patched for ext3.  And, no, I wasn't
> doing anything evil before it happened :)
> 
> It seems that I've lost my partition table, and perhaps more.  Any
> suggestions for recovering my data?  I have access to a x86 Linux machine,
> but I don't know if ext3 fiddles with the byte order.

Don't trust what the Mac says about your partition table.  My mac
never liked any disk that had linux on it.  YMMV.

Did you try to mount the hfs partitions from linux?  That can
trach the hfs partitions.

If you can mount that disk on another linux box it might help to 
check it.  At least you will isolate the failure and know if the disk
spins and reads.  Ext2 is ext2, so presumably ext3 is ext3.  :-)
Mount it ro.

The Mac restore might have trashed it.  Happened to me.  Repeatedly.  
What I did to prevent that was to put a small hd set up the way 
Mac wanted it and keep all the linux stuff on additional hds.  We 
booted from macos anyway.  An ibook presumably does not have the
space.  :-(


> 
> - -- Michael
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> 
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