I did a dual install of Ubuntu and Mac Tiger on my pismo fire-wire powerbook. I read that the Mac OS had to be on the partition after the Ubuntu install so I did that. The Ubuntu works correctly, however when I rebooted into Tiger something happens and I can no longer reboot into Ubuntu. I have tried twice with the same results. Each time I had to do a complete reinstall of both systems. The third time Ubuntu installed correctly and used about half of the drive but Tiger is nowhere to be found. I am a newbie and probably don't need to have a dual install but the idea sounded cool. If it is too tricky I will just stay with the Ubuntu. So I have a question. Is there something obvious that I am doing wrong regarding the dual install or is this a waste of time for a newbie?

First, you can try the info in this link , to see if it works for you.

If not, then do what I did to find that link, www.google.com/linux, use the search keywords "dual boot" mac linux, and start reading.

PS: the subject line in your post doesn't seem to have anything even remotely related to 'expanding partition', as in re-sizing. Did I read incorrectly? Did I miss something?

Thanks for the tip, I'll give it a try. Sorry about the subject line, I changed my question without remembering to change the subject.