Peter, This is actually easier than MickeySoft, once you understand the relationships. First you need to know what device your cd-rom is. ~Normally~, it will be a SCSI device at address 4; and usually, on the first controller. Type $ Sho dev d and look for a disk that is write-locked, probably DKA400. If it is ... With the cd in the drive, type $ Mou/over=id dka400: then $ Set Def dka400:[000000] you are now ready to wander around as on any other RMS volume. Dale