Tiger

This is how not to install Tiger on an older G4:

Insert DVD.
Listen to DVD whir.
Realize you only have a CDRW installed, not a DVDR.
Mutter obscenities.
Re-visit the horror of installing the CDRW into the G4.
Locate old slot-load DVD-Rom drive.
Crack the G4 case and splice in the DVD-R.
Install Tiger, and be amazed.