I believe that a utility such as LaCie's Silverlining will add an A/UX 
partition (since that's what I did to my own disk).  You simply have to 
optimize your hard drive first so that all of the free space is 
contiguous and then repartition it (otherwise you may lose data in your 
mac partitions when you repetition the drive).  Just remember, currently 
I don't think that NetBSD/mac68k supports having more than like 8 total 
partitions on the drive, including those partitions that exist on the 
drive by default (like the disk directory and the free space partition 
and whatever else is sitting in that small segment on the outside edge of 
the disk).

Later.


-- 
Colin Wood                                      ender@is.rice.edu
Consultant                                        Rice University
Information Technology Services                       Houston, TX