Currently Being ModeratedJul 2, 2011 3:41 PM (in response to softwater)
Holding down the Option key should get you the Startup Manager.
Whether a Linux CD should show up there, I don't know.
Currently Being ModeratedJul 2, 2011 6:02 PM (in response to softwater)
YellowDog Linux seems to be the best supported Linux distro on G4's
Even though on one site that it says Ubuntu works on G4's it's a older version most likely and Ubuntu apprantly has dropped support for PPC.
Currently Being ModeratedJul 2, 2011 7:12 PM (in response to softwater)
From what I recall you have to download a PPC version of Linux. I've tried Ubuntu for PPC and that worked well on a Clamshell. The only drawback was the fact you couldn't install x86 apps on the PPC architecture.(Thing like skype for Linux wont work) it's very limited on what you can install and what will work.
The same process applies for installing the software, holding the 'C' key down on booting and it will start the install process. Just make sure it's the PPC version of Linux.