>> 	i understand the goal, but i found openbsd approach extreme simple
>> 	and useful when i would like my Mac be a BSD-only system (when I do
>> 	not need any Mac OS 9/X, nor AIX).
>BTW, it's also worth to add HFS and Apple partition map support
>in our kernel and build-tools so that we don't need MacOS to boot NetBSD,
>and we can share disks with other OS.

	openbsd has sbin/pdisk, which should be able to do some of the
	HFS-partition maintenance tasks.  does it satisfy (part of) the goal?
	http://www.openbsd.org/cgi-bin/cvsweb/src/sbin/pdisk/

itojun