I have an older Powerbook g4 alum that I just put a new HD in. When I insert the OSX DVD it just pops back out again. (Its about 4 or 5 years old so it might just have a CD drive, I never remember watching a DVD on it, but I doubt it, I think they all had DVD drives) It works fine on my imac though. So I hooked my laptop up to my imac as a firewire drive and hoped I could install the OSX from my imac but it won't come up as a firewire drive either, is that because there is nothing on it and its not formatted? What else can I try? Thanks!