Has anyone been able to install MacOS 8.6 or 9.2.2 on a Mac II or Quadra with a PowerPC upgrade card?

[nathall]

Perhaps that’s what I used. I know I used it to try to get 9.2 to work on the 6300/120 and 1400cs, to no avail.

 

[superseth]

I recall a few of the G3 upgrade cards Sonnet shipped stated in the manual that they only worked up to 9.1. It is possible people found workarounds later, but in general at the time I recall 9.1 being the ceiling for anything Pre-G3.

 

[croissantking]

Any practical reason to go to 9.2 on an unsupported Mac, other than for OS X classic mode compatibility?

 

[superseth]

I was wondering the same thing - it is possible there are some later applications like iTunes or something that require 9.2 but at this moment I don't recall.

 

[nathall]

Any practical reason to go to 9.2 on an unsupported Mac, other than for OS X classic mode compatibility?

As far as things that only work under 9.2 and not 9.1, I’m not sure. But I do find 9.2 faster than 9.1. You can still get some of the speed boost by installing 9.1 on machines that won’t boot 9.2 but dropping in the Finder from 9.2 in place of the 9.1 Finder.