Dan giving very important questions for making NetBSD dedicated machine 
with OF 3 firmware.

(1) You need HFS/HFS+ partition to boot.
    It is true there are another trick/effort not to have HFS/HFS+ partition,
    but aside from that, this is true.
(2) The size of HFS/HFS+
    The minumum size with MacOS 9 boot CDROM/Drive Setup is 32MB.
    You may have trick to reduce this size to some extent with pdisk,
    but you need at least 819kB to be recognized by hfsutils.
    Also HFS standard is recommended for hfsutils operation.
    Do not take HFS+ type.
    I have no good instruction to create partitions with pdisk though.

(3) Another partition
    You need to use MacOS 9 boot CDROM/Drive Setup to create 
    whole partitions.
    /           A/UX Root
    swap        swap
    /usr        A/UX user
    ofwboot     HFS

    pdisk may help you manupilating partitions after you have NetBSD 
    running, but I don't have any good information for that now, sorry.

(4) How to put ofwboot.xcf onto HFS partition.

(4-1) Use MacOS
   (a) Have Netatalk (AFS) server and have ofwboot.xcf there.
       Boot from MacOS 9 CDROM, and copy ofwboot.xcf from server
   (b) Have two CDROM drive attached, and one for MacOS9 to boot,
       the other for NetBSD/1.6 ISO to copy ofwboot.xcf
   (c) use target mode of Firewire ( if you have ieee 1394 port
       and another machine to manipulate)

(4-2) use dd
    Have special HFS image with ofwboot.xcf in it, copy it by dd.
    This can be done at netbsd-GENERIC_MD.gz stuff.
    dd if=/mnt/OF3/ofwboot.xcf-for-dd of=/dev/wd0e bs=64k
    The size will be 819kB or more.

    The older version of that image is at
    ftp://ftp.ki.nu/pub/NetBSD/port-macppc/OF3-installation/ofwboot.xcf-for-dd
  
(4-3) use hfsutils.

    Up until you have ofwboot.xcf on HFS, you may boot using
    NetBSD/iso CDROM.
   
    boot cd:,ofwboot.xcf hd:10/netbsd

    Then you have multi-user operation on NetBSD,
    pkg_add hfsutils
    hformat /dev/wd0d
    hmount  /dev/wd0h
    cd /cd/drive0
    hcopy ofwboot.xcf :ofwboot.xcf
   (assuming you have cdrom on /cd/drive0)
---
Makoto Fujiwara,