I have a G4 mini with Tiger on it. I now have a spare license for leopard so want to upgrade it. The internal DVD drive appears to be hosed, it spits out the leopard disc and any other DVD/disc I put in there. Purely out of chance I decided to plug the HD-DVD drive from my xbox into the mini, and to be honest, I was surprised when the leopard disc appeared in the finder, no fiddling, no drivers, no downloads. It just worked until I tried to boot off it, it appears to be non boot-able, despite being recognised by the OS. So, how can I get leopard on this mini? Things I have at my disposal that may be useful 1 alu MBP, firewire 800 port 1 whitebook, fw 400 port external hd-dvd drive fw 400 cable 80gb fw 400/usb external hdd. what are my options? can i boot off the dvd over the network from another mac like the air presumably has to? make a bootable image on the fw drive? target disc mode with the disc in on the whitebook?