partitioning & install help on late PowerBook

Hello,

at the end, I am a little confused about the many details, but I want to 
install NetBSD on my PowerBook G4 Aluminium. It is a later model and has 
openfirmware 4.

I discovered that the installation guide is not totally correct and to 
follow.
I verified that just a plain install using sysinst and "whole disk" will 
result in an unbootable system
I understand I need a bootloader partition, be it MSDOS or FAT and that 
MSDOS is creatable from the installer CD (or should... I am unable too). 
I need to source the bootloader and copy it there.

How to but all these things together? Up to now, I failed.

Riccardo