On May 9, 2007, at 9:11 PM, Robert MacLeay wrote: Robert's answer is right, but his answer doesn't include the real reason why. While Tiger does indeed require at least a G3, the main reason that OS X won't work, even with XPostFacto and a CPU upgrade, is that the 8100 is a Nubus based machine. > In a world of $50 Blue & White G3 Macs, there is not much point, > either. Agreed, although I'd recommend a G4 AGP Sawtooth as the minimal starting point. Phil