VMS Help MOUNT, Qualifiers, /MOUNT_VERIFICATION  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /MOUNT_VERIFICATION (default)
       /NOMOUNT_VERIFICATION

    Specifies that the device is a candidate for mount verification.

    The /MOUNT_VERIFICATION qualifier affects the following media:

    o  Files-11 Structure Level 2 or 5 disks (mount verification is
       not supported for foreign-mounted disks)

    o  ISO 9660 and High Sierra CD-ROMs

    o  Foreign and ANSI-labeled magnetic tape volumes

    Example

    The following command mounts an HSG80 Fibre Channel disk device
    labeled FILES and assigns the logical name WORK. The /CACHE
    qualifier disables extent caching, file identification caching,
    quota caching, and writeback caching; the /NOMOUNT_VERIFICATION
    qualifier disables mount verification.

    $ MOUNT/CACHE=(NOEXTENT,NOFILE_ID,NOQUOTA,WRITETHROUGH) -
    _$ /NOMOUNT_VERIFICATION  $1$DGA0: FILES WORK
    %MOUNT-I-MOUNTED, FILES         mounted on _$1$DGA0: (NODE)