The problem with seeing rz5 and rz6 is that conf-glue.c in arch/pmax/pmax only has entries for rz0-rz4. Add in the lines for rz5 and rz6 and it sees those disks. Also that file only has tz0 and tz1 so if you want a tape at tz2-6 you will need to edit conf-glue.c. yoseff