10.4 will not install on some of the older machines, yours is one. You are stuck at 10.3.9 unless you can find someway around the installer. On Apr 6, 2007, at 5:24 PM, Erin Anon wrote: > I have a PowerMac G4 (AGP Graphics) with 400MHz processor and 1gb > of ram and I'm having two issues. > > First is an upgrade issue: > It currently has 10.3.9 on it, and I've gotten two different > upgrade dvd's from two different people for 10.4 but I keep having > the same problem. > I put the dvd in the dvd drive, and it just spits it right back out > after thinking about it for about 5 seconds. The cd/dvd icon never > shows up on the desktop. > I've tried rebooting and holding c but that just does the same thing. > One of the dvd's was dvd-r but the other was dvd+r. > I'm thinking the drive is probably fine since it plays normal dvd > movies and can run an ubuntu livecd just fine as well. > Also, my mac doesn't have firewire which it mentions on the apple > site is a requirement, but would that matter? > Any ideas? Brian G4 gigE 1.0 GHz Powerlogix, 1 GB RAM