You have an Old-World Mac. There are no LiveCDs that can boot them.
Before you install Linux, you might have to mess with stuff in Open Firmware (although perhaps OS X has done that already). Your model is notoriously difficult to boot. In case you need to, here are some resources:
I've had experience with Debian 3.0 (woody), which had floppy images that you can use to boot the Debian installer on Old-World Macs in this directory:
* the "boot-floppy-hfs.img" is a MacOS boot floppy that loads the Linux kernel and asks for the "root" floppy
* the "root.bin" is the root floppy it asks for and starts the installer
I think the current Debian 3.1 (sarge) also has similar images. Make sure to write these floppy images raw onto the floppy with "dd" or something similar; Mac Disk Copy sometimes messes up the image if you don't lock it.
Make sure to read the installation manual (woody
). You should have the installer install the "quik" bootload