I grabbed the files from
ftp://ftp.netbsd.org/pub/NetBSD/arch/macppc/netbsd-pdisk
and tried to create NetBSD Root and Swap partitions.

I tried netbsd-pdisk.macppc-1-6 when I booted from the INSTALL kernel
of the 1.6Q snapshot I have (20030331) but it will only set the Root 
flags - there's no option to set Swap (or Usr) flags.

So I tried netbsd-pdisk.macos-10-2 under OS X (10.2.1) and it asks me 
which flags to set, but it claims the map isn't writeable and won't 
write any of my changes.

Any suggestions?

Thanks
David