Urgent! Yaboot died, how to rescue?

[Sean Schertell <debianppc@datafly.net>]

Please help!  I've gotta get some work done quickly but I seem to have 
killed my yaboot and can't boot.  It's on a PowerBook, so no floppy.  I got 
hit with the bug in module-init-tools 3.1-pre2-1 which causes this 
craziness:

modprobe: FATAL: Could not open '/lib/modules/something...
modprobe: FATAL: Could not open '/lib/modules/something...
modprobe: FATAL: Could not open '/lib/modules/something...
modprobe: FATAL: Could not open '/lib/modules/something...
modprobe: FATAL: Could not open '/lib/modules/something...
modprobe: FATAL: Could not open '/lib/modules/something...
modprobe: FATAL: Could not open '/lib/modules/something...
modprobe: FATAL: Could not open '/lib/modules/something...

(times about a hundred or so)

This happened when I tried to install 2.6.6 so for the past few weeks I've 
been typing "old" at the boot prompt and using an old 2.4 kernel.  So now 
I installed the 2.7 kernel which has the same problem and to make things 
worse, typing old now causes the 2.6.6 kernel to boot and panic.  

How can I rescue my machine so I can get in and edit yaboot?

Thanks!

Sean


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