>I tried this `ata/ata-disk@0:0' and `ata/ata-disk@0:bsd'
>I always get the same result: I see a picture of a floppy on my screen and
>an 'x' inside.
>I suspect that the problem is that  the MBR is not changed..
>and it still contains something to boot MacOS which I don't have anymore.
>I need either to install the bootloader (if any) or clear the MBR (if
>any)..
>damned Mac, why should it be that difficult while everything is very
>simple in PC (BIOS, CMOS) without shortcuts and stuff like that.

First, there is NOTHING easy about working with a pc.  Second, if you
see the disk with an x, then you have already started booting macos, and
the system can not find a valid system folder. The computer doesn't know
what to do at that point.  There is no "MBR", since it boots from rom. If
you want to run NetBSD or ANY other OS, you need to tell the mac BEFORE
it starts to load macos.  You have to change the nvram so it doesn't
automaticly boot to macos.  Use the Boot Variables program to do this,
or go into open firmware. If you don't catch your computer in
open firmware BEFORE it boots into macos you will always have this
problem.  You should thank your lucky stars that you don't have BIOS or
CMOS or some other archaic backwards comapable "features" to deal with.

Aaron Jackson