So I got me a 660av CD and it wouldn't boot. So I stick in 7.5, it boots, 7.6 it boots. So I start from a 7.5 floppy and put in the cd thinking what the hay.

I get it to install a full system for 660av and go to reboot. This Mac does not support this version of 7.1.

Sometimes you just get sideswiped by reality.

It's probably they hit a certain point and went with 7.5 just because.

Oh well.