I need an OS that can boot both as 68K and PPC so I can switch back and forth. A/UX MacPartition will only boot as 68K and 8.6 will only boot as PPC, and 7.6 is a suboptimal choice for me because I need the later AFP support. As it happens I do have 7.6 on it right now but mostly as a buffer until I finish all the partitioning work. So 8.1 satisfies all the requirements; it can boot in either mode and I can switch the card off or on, and it has all the support extensions I need.

Getting A/UX happy on the 18GB drive I put in it was a right pain in the @$$. I eventually went with Silverlining and had to figure out how to newfs everything from the SASH (documented now on http://www.floodgap.com/retrotech/os/aux/ ). Right now it boots 8.0, 7.6 and A/UX 3.0. Next weekend I'll upgrade the 8.0 to 8.1, wipe the 7.6 and put 8.5 there and then 8.6, and A/UX 3.1.1.