Dual boot stable & testing on 1 hard disk?

["Ross Smith" <nospam2@pobox.com>]

I'd like to set up the following on hda:

(potato)
/boot (hda1, 5M)
/	(hda6, 4G)

(woody)
/boot (hda5, 5M)
/	(hda7, 4G)

(shared)
/home	(hda8, 20G)
(swap)(hda9, 256M)

and dual-boot between them.

Is this possible?  If so, how?

Is this the smartest way to accomplish the objective of toying with woody
(pun intended) without buying a new HD, or running VMWare?

Thanks,

Ross