Your error message (if it's the only message) indicates something
fundamentally wrong, like specifying the wrong root partition in
yaboot.conf.
Yaboot.conf works when using the default kernel. The only changes I make
are to add the location of Macos:
macos=/dev/hda14
and change the kernel image location:
image=/boot/vmlinux
label=linuxBenH
## image=/vmlinux
## label=Linux
## read-only
Hmm... looks like I need to try re-enabling "read-only". I'm heading out
the door now but will try later today.
Thank you, Mich. Re-enabling read-only worked.