SCSI Partition question

[Rich Hare <Rich113JL@gmail.com>]

I'm trying to partition a rather large SCSI drive (1.2 gig) for use on a 
IIGS.  I think I've done it before, but can't seem to remember how I did it.

I'd like to set up about four Prodos Partitions and have the rest be a 
large HFS partition.

I've tried using Advance Disk Utilities.  It seems to accept the 
commands, but when I click on "Partition", it comes back "failed".  I'm 
guessing it is because the drive is too large.

I've tried fiddling around with my Ramfast, but of course it doesn't 
understand anything about HFS.

I've looked at UtilityWorks and at ProSel 16, but don't find anything there.

I've connected it to a High Speed SCSI and tried Apple's utilities; they 
will set up four ProDos partitions but leave the rest of the drive blank.

Any suggestions?

Rich