Perhaps the title is a bit of an exaggeration - I probably can upgrade, just can't figure out how! Here's the rundown. I picked up a G4 server and am finally getting around to setting it up. It's got an Ultra160 SCSI controller with a 10k RPM drive in and has (from what I can tell) two boot partitions - 9.0.1 and 9.2.1. Neither is particularly useful to me because of all the old junk on there, and plus, the applications for which I will use the machine are for OS X. Because the primary drive is SCSI I can't do Target Disk. I have a few IDE drives in there but don't know how to make them masters, or even if I want to. I put in the Tiger Server DVD. It opens, sometimes, if the machine is booted, but only wants to restart the machine, which just leads back to booting into 9.x. I got lost in Open Firmware as it's so foreign to me. But I CAN get into OF. Holding CMD+alt+shift+delete at startup does not forego the startup disk and boot from DVD, as it should (I'm told). Basically - I am stuck with a useless old machine simply because there seems to be no way for me to install Tiger. Not even Leopard (it's too slow, yeah yeah I know I can dupe it, but I won't, yet). I am well aware it's a PPC Tiger disk, as it mounts and launches installer sometimes, but that's it. Any ideas?