[net.unix] 2.8/2.9 file system compatibility

jwp@uwmacc.UUCP (jeffrey w percival) (02/14/85)

we are running unix 2.8 on an 11/70, with an rm03 for the root device
and usr filesystems on another drive.  we now have 2.9 running on our rm03,
can we now just mount the 2.8 filesystems residing on the other drive
or do we have to restore them from a dump tape?