Hard drive formatting

[sadasiva@utkvx.utk.edu (Krishna Madurai Sadasivam)]

Greetings!

I would like to use my newly purchased 1 GIG drive on my IIGS at home and my
PowerMac 6100. It's a Joule Portable drive made by LaCie, and comes formatted
for the Macintosh. What would I need to do to have a IIGS partition (ProDOS)
and a Mac Partition. Ideally, when I bring the drive home, I want to use it as
a boot drive on my IIGS. When I use the drive on my Mac, I want to use the 
drive as a data drive. Can this be done? If so, what is the procedure? I
have System 6.0.1 on my IIGS, and System 7.5.2 on my Mac. Also, when it comes
to daisy chaining hard drives, what is the typical cost of the appropriate 
cabling?

A hearty thanks in advance for helping me out!

Krishna