Holm Tiffe wrote: If you are using @SYS$SYSTEM:SHUTDOWN to shut down, this should issue a DISMOUNT /ABORT /OVERRIDE=CHECKS (optionally /CLUSTER and /UNLOAD) for each disk that is mounted. However, this only marks the disk for dismount and the disk might not actually get dismounted if there are processes still accessing files (including the pagefile) on the disk by the time the CPU is halted. You might see some messages at shutdown time saying that the disk has been marked for dismount or maybe there might be a message saying it couldn't be dismounted? It works ok for me with VAX/VMS 5.5-2 on a VAXstation 3100 but I have a pagefile on the system disk as well as a pagefile on a second disk and this setup may be less likely to end up with a system process which cannot be stopped grimly hanging on to the pagefile on the second disk at shutdown time (because the system processes will most likely get pagefile allocations in the pagefile on the system disk, not the pagefile on the second disk.) The /NOREBUILD means don't rebuild the free space cache. If the free space cache is not rebuilt after the disk is improperly dismounted, the result is that not all of the free space on the disk will be available for use. There will not be damage to the filesystem or data loss. The missing free space can be recovered using SET VOLUME /REBUILD at some more convenient time after booting instead of having MOUNT /REBUILD hold up the boot process. Regards, Peter Coghlan.