So i've been doing a good amount of research on this seeing as I want to get my computer up and running rather than sitting on a desk. I just bought an iMac G5 second hand. The disks given to me with it didn't work, big surprise I have to install the OS myself. Things I have: 1TB External HD with a 800-400 firewire which I can hook up to my iMac G5. .DMG files for installing leopard and tiger as well, just wanted to be certain. This is what I've gathered from the snippits of youtube clips/forums I've pieced together. ---- Convert .dmg into .iso disk image on disk utility or something like that Partition 10GB+ of Mac os X Journaled on my External HD put the image "INSTALL MAC OS X" .iso or .dmg or whatever on the partition plug in my external hard drive and boot iMac in target mode to install? --- Before I start trying to do this, I want to make sure I'm not wasting my time. There are so many different variables, at a certain point while researching how to do this everyone always goes back at some point to reference the install Disks. I don't have them, I've got "clones" of them downloaded from the internet.