I put together a little tutorial on a web page 
(http://www.mrs.org/~fleeger/imac_netbsd) that describes the (sort of 
kludgy) process I used to get NetBSD and MacOS to share the same hard 
drive.  Some of the features of this configuration:


Everything boots from the (single) hard disk; no network boot, no CD 
boot.

No specific need to enter the Open Firmware prompt (uses System Disk and 
zapping PRAM to switch OSs (although I should be using yaboot, but I am 
not really concerned about things being *that* smooth just yet...)  A 
note about this part, does anyone have a program (or is there one 
already?) that writes OF variables from within NetBSD/macppc?  I'd like 
to make a script like the old "macos" program for LinuxPPC...

I've included screenshots, links to pertinent utils, and System Disk 
documents for easy download.


I did all this because I had a very hard time getting NetBSD on my iMac 
(mostly due to OF ignorance), and I was hoping to make it easier on the 
next guy.  I've been following the mailing list off and on, but mostly 
people say that the iMac needs to be booted from CD or network, so I 
wanted to find a smoother way (until now I was netbooting from a Quadra 
840AV).  If I am repeating something that's already been done and 
wasting my and your time, let me know, but I hope this document is 
helpful for someone.  Please e-mail me at fleeger@mrs.org if you like it 
or hate it or if I've made a glaring mistake.  Thanks!

Matt