A few days ago I was having fun on my 'spare' iMac(trayloader, 333MHz, 96MB,6 gig... pretty standard), and thought I may as well load X onto it to bring it forward a few years. Stuck in the 10.1.3 CD, no dramas, rebooted and flew through the setup assistant just fine.
Then came the OS X.1.5 update.
On the first restart after installing, it went straight into Open Firmware with a happy little "Failed to boot." prompt.
Reset PRAM, all is well. Or so it seemed...
Started trying to load a few programs; old iTunes and Messenger variants, all were behaving erratically and refusing to quit(iTunes wouldn't even force quit).
So another restart. Another PRAM reset. More jerky crashing programs. And to top it off, System Preferences refused to let me reboot it into OS 9.
That much crap has never happened to me before on one of these iMacs, and I hope it never will again; but basically, if you ARE going to insist on making your poor tired trayloader run OS X, BE AWARE of what can happen. And get yeself into a slotloader.
The firmware DID get updated, right? That being missed cuases all sorts of havoc.
Yeah firmware is important. I have installed versions of OSX from DP3 too 10.3.5 on tray load iMacs with no problems.
The firmware version is exactly the same as on The Other iMac(Bondi).. and the Bondi was perfectly happy to run X.1.5.
I'm still scratching my head on this one...