Can't boot to SCSI device...

[Romeyn Prescott]

I have a Mac G4 with an IDE drive and 3 SCSI drives.  It's worked so 
well for so long I can't remember all the voodoo I had to do to get 
it working waaaay back when.

The YDL Linux 2.2 root partition is on /dev/sda7

Sometime last week I was messing around with the "new" MOL (I finally 
had time to play around with it) and installed it and booted into OS 
X with MOL.  Both OS 9 and OS X are installed to the IDE drive. 
ANYHOO, MOL mounted my bootstrap partition.  I didn't give it a 
second thought until today when I had, for the first time in MONTHS, 
to reboot this box.

It booted to the MacOS.

:-(

I can NOT for the life of me get this box to boot back to Linux by 
any means.  IIRC, I had taken the route of "hacking" Open Firmware to 
give me a boot menu from which I chose CD, Linux, or Mac with Linux 
being the default.

I've tried booting from the 2.2 CD per instructions on the web site 
and using "boot-cd root=/dev/sda7" (and sda5) to no avail.  All I get 
are "Invalid device" errors.

I've also tried to re-run the installer and re-define the boot 
partition and mount points, but as soon as I click "OK" with 
"Bootstrap" selected from the list of install things-to-do python 
yacks with an option to either debug or quit (something about not 
being able to write /etc/fstab...I can be more specific if you think 
it'll help).

Can someone PLEASE tell me how to get this thing booted so I can redo 
the yaboot/ybin thing?

Thanks,
...ROMeyn
-- 
http://www2.potsdam.edu/prescor/signat-url.htm