Check out the NetBSD/mac68k FAQ, located at:

http://www.macbsd.com/macbsd/macbsd-docs/faq/

There is one Q&A which covers what utilities can be used to partition 
drives.  The question also covers a patch to the Apple HDSC Setup program 
which allows it to be used with non-Apple drives.

Hopefully, this will be what you need.

Later.

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