I have followed the instructions:
ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-1.4.2/macppc/INSTALL.html
and made a boot floppy so I could install other files
from CD. However Open Firmware prompt doesn't do anything
so I have tried:
http://www.netbsd.org/Ports/macppc/SystemDisk-tutorial/ 
instructions to install nvram patches and change
boot parameters with the System Disk.

Problem is, when i start the System Disk it says
somenthing like "Your computer can't run Mac OS X.."
and I can't use Save to change any setting, it
results only to the error sound "ding".

I know this is not directly related to NetBSD
MacPPC port, but if someone could give me pointers
what to try next.

-- 
Janne Lindqvist, janne.lindqvist@uwasa.fi