Dont get me wrong. Maxx1 cards are unique and state of the art. And they boot OS9 IIRC. They are just delicate/finicky with some QS.
Meant to reply a day or two ago..
Yeah, they boot OS 9, because Knezzen specifically inquired about it as a must in his first post! I paid attention to this thread, but forgot some of the specifics and had to reread.
It appears that Max is the only one (that I can see) who reported having troubles in the 2001 QS, another person has it working in their 2001 model and mine is a 2002 QS.
Thanks for the links btw. I have read that disk upgrade thread before on this site, more than once. I don't know whether I dived into it, or drowned in it!

Lots of divergent info there, very easy to get lost in some of that.
Maybe I should just take a chance and buy the card and see what happens?