RA90 not releasing session on port B? How can I reset the drive?

Hi, I cleaned up my laundry/computerroom real nice. The two VAX6450s now want to talk to each other (and not just stand side-by-side :-). I have the star coupler attached to the wall, at a nice angle under the staircase, which makes it really nice to connect the CI cables. Can't wait to do IP over CI between the two. So, I copied my Ultrix disk's / and /usr partition to another drive and having connected the second VAX6k to that other drive on SDI port "B" I could actually boot it with the generic kernel and so forth. Then I found I was missing something, so I wanted to get back to the first VAX and mount that drive again to add something to it. But fron then on every attempt to mount or write to the drive from port "A" causes the WRITE PROTECT LED to lite up quickly and then the OS comes back with an I/O error on writes and a write restricted error on mounts. I can't even do mount -r that drive. I tried shutting down, spinning down, resetting, powering off and everything I just can't get the drive responding to write requests from port A any more. What is the magic here? These drives seem to have a memory that lasts even when powered off. Once I turned off the main breaker before the drives were spun down. It does sound ugly, but they all work nicely still. And I noticed that they remembered the "R" status when I powered them on again. So, how can that memory really be cleared? thanks for your help, -Gunther -- Gunther Schadow, M.D., Ph.D. gschadow(a)regenstrief.org Medical Information Scientist Regenstrief Institute for Health Care Adjunct Assistant Professor Indiana University School of Medicine tel:1(317)630-7960 http://aurora.regenstrief.org