instaling ubuntu with mac os 9 ? is it possible.

Hi to all

well i use imac g3 20 gig hard drive, 1 gig RAM. i was just wondering is it possible to install ubuntu and mac os 9 together and on booting i can choose which on is to use,or boot into.

currently i am using ubuntu 7 alone,
how can i do it.

I have os 9 and ubuntu on my G4 however I have a second Hard Drive. I would think it's possible if you partition your hard drive and use yaboot to switch between os 9 and Ubuntu.