Hey, In the process of switching my whole setup from ext2 to reiser, I did a lot of repartitioning/rebooting. In the process I did a stupid thing with my bootstrap partition. I had originally made it huge, 50Mb. When moving to reiser, I need a small ext2 partition to hold my kernels, so I split my 50M bootstrap into a 1M hfs bootstrap, and a 49M ext2 kernel partition. In the process I forgot to remake the hfs file-system, I just kept right on using the old one that had been truncated... until I tried to run ybin for the fourth time it and tried to access a disk sector that was off the partition. Instead of just calmly rebuilding the filesystem (with hformat) and then re-running ybin, I rebooted (duh).
Hello OF... After grabbing my potato boot CD, and booting into the installer. I finally calmed down, and realized all I needed was a *working* yaboot prompt. I rebooted, and when the yaboot prompt from the CD showed up it was just a simple hd:10, /vmlinux root=/dev/hda13 and I had my system back... Thank you Ben/Ethan. yaboot/ybin are wonderful... jas.