Currently Being ModeratedDec 31, 2012 7:59 AM (in response to pete147)
It depends on the specifications of the iBook in question.
If its bellow 867 Mhz processor speed then you can install Mac OS X 10.4 Tiger.
Anything above up to 1.4ghz will allow you to install Mac OS X 10.5 Leopard.
Alternately you could install Linux for PPC Mac
Hope this helps.
Currently Being ModeratedDec 31, 2012 8:29 AM (in response to pete147)
This link is to an Apple chart regarding which iBook G4 you have.