Hello everyone,
  We have a macrovax II,the dua0 is unusable.We only can use the dub1.
When I use the command sh dev/full dub1 under vms.I get the following

Disk BJL3$DUB1:, device type RA81, is online, mounted, file-oriented device,
    shareable, served to cluster via MSCP Server, error logging is enabled.

    Total blocks    864756  Sectors per track        51  
    Total cylinders 707     Tracks per cylinder      24
    
These parameters are diffrent from what we can get from the disktab entry
from the FAQ

I use the parameter I get under vms to write the disklabels.
When boot from the ra(1,1,1) and then mount the root device on ra5
I get the message
udb1 loss interrupt
reset uda0 
Process(pid 0) got signal 11

Who knows how to solve the problem ? Thanks!
                                                Haitao