Just for my own understanding are you indicating that i should have installed 9.2.2 before installing OS X with XPostF ?
Also not sure i really understand what the advantage would be of having 9.2.2 on the original/primary hard drive when in most cases the primary objective of installing OS X via XPostF is to run OS X from mac hardware Apple does not support running OS X.
Personally I do log back in to the hard drive that has OS 9.1 ( using XPostF startup control application ) and then log into OS 8.6 ( on that same drive ) simply because most if not all my midi/audio programmes freeze in OS 9 which stands to reason since those programmes were written prior to OS 9 architecture.
I also learned that it is a good idea to partition the second internal drive and install OS X to both of those partitions.