...I finally got OS 10.4 running on my G4 Sawtooth.
For those who are unfamiliar with Macs, Target Disk Mode (first in SCSI, later in FireWire) is a neat method that allows you to power up a Mac in such a way that you can use it as an external hard drive for another machine. Pretty handy.
In this case, I've had problems with the antediluvian 1X Matsushita DVD on the Sawtooth not being able to read modern DVDs. The situation was to boot the G4 into Target Disk Mode and hook it by FireWire cable to the iMac, which saw it as a local drive. Then I just ran the install for Tiger normally.