Hello,

> > None of them work properly with an UMAX S900 as far as I know,
> > although some MacOS versions think it's a PowerMac 8500 for some
> > reason.
> 
> I've used System Disk 2.3.1 on 7200, 7300, 7600 and AGP G4 models
> without any problems. What problems do you experience with it?

It refuses to do anything useful. That's it, it just refuses to work on non-Apple machines, no matter if that makes sense or not.

have fun
Michael