/OVERRIDE=(keyword[,...])
Inhibits one or more protection checks that the MOUNT command
performs.
You need the user privileges OPER and VOLPRO to specify
/OVERRIDE=(ACCESSIBILITY, EXPIRATION) along with the /FOREIGN
qualifier; otherwise, the magnetic tape is not read.
If you specify more than one keyword, separate them with commas
and enclose the list in parentheses.
The following table lists the keywords for this qualifier:
Keyword Description
ACCESSIBILITY For magnetic tapes only. If the installation
allows, this keyword overrides any character
in the Accessibility Field of the volume. The
necessity of this keyword is defined by the
installation. That is, each installation has the
option of specifying a routine that the magnetic
tape file system will use to process this field.
By default, the OpenVMS operating system provides
a routine that checks this field in the following
manner:
o If the magnetic tape was created on a version
of OpenVMS that conforms to Version 3 of ANSI,
then you must use this keyword to override any
character other than an ASCII space.
o If an OpenVMS protection is specified and the
magnetic tape conforms to an ANSI standard that
is higher than Version 3, then you must use
this keyword to override any character other
than an ASCII 1.
To use the ACCESSIBILITY keyword, you must have
the user privilege VOLPRO or own the volume.
EXPIRATION For magnetic tapes only. Allows you to override
the expiration dates of a volume and its files.
Use this keyword when the expiration date in the
first file header label of any file that you want
to overwrite has not been reached. You must have
the user privilege VOLPRO or your UIC must match
the UIC written on the volume.
IDENTIFICATION Overrides processing of the volume identifier
in the volume label. Use this keyword to mount
a volume for which you do not know the label,
or for an ISO 9660 volume whose label is not
unique in the first 12 characters. Only the volume
identifier field is overridden. Volume protection,
if any, is preserved. The volume must be mounted
/NOSHARE (either explicitly or by default).
The /OVERRIDE=IDENTIFICATION qualifier is
incompatible with the /GROUP and /SYSTEM
qualifiers.
LIMITED_ Allows the Mount command to search an entire
SEARCH device for a home block, if a home block is
not found at the expected location. By default,
the search for a home block is limited to avoid
excessive search times if no valid home block is
present.
LOCK Directs MOUNT not to write-lock the volume as
a consequence of certain errors encountered
while mounting it. Use this keyword when you are
mounting a damaged volume to be repaired using
the ANALYZE/DISK_STRUCTURE command. You must have
VOLPRO privilege or own the volume to use the LOCK
keyword.
NO_FORCED_ Directs the Mount command to proceed with
ERROR shadowing, even though the device or controller
does not support forced error handling. Using
unsupported SCSI disks can cause members to
be removed from a shadow set if certain error
conditions arise that cannot be corrected, because
some SCSI disks do not implement READL and WRITEL
commands that support disk bad block repair.
OWNER_ For magnetic tapes only. Overrides the processing
IDENTIFIER of the owner identifier field. Use this keyword
to interchange protected magnetic tapes between
OpenVMS and other operating systems.
SECURITY Allows you to continue mounting a volume if
an error is returned because the volume has an
invalid SECURITY.SYS file. You must have the user
privilege VOLPRO or own the volume to use this
keyword.
SETID For magnetic tapes only. Prevents MOUNT from
checking the file-set identifier in the first file
header label of the first file on a continuation
volume. Use this keyword only for ANSI-labeled
volumes on which the file-set identifier of the
first file on a continuation volume differs from
the file-set identifier of the first file of the
first volume that was mounted.
SHADOW_ Allows you to override the write protection of
MEMBERSHIP former shadow set members. Applicable only if
you have the volume shadowing option. see the VSI
Volume Shadowing for OpenVMS.
When you mount a volume with this qualifier, the
volume shadowing generation number is erased.
If you attempt to remount the volume in a shadow
set, the volume is considered an unrelated volume
and receives a full copy operation from a current
shadow set member.
The following command overrides the volume identification
field, thus mounting a magnetic tape on MFA0 without a label
specification:
$ MOUNT/OVERRIDE=IDENTIFICATION MFA0: