The update option re-creates the optical volume index entries for all volumes in a media library or a specific volume by reading the volume data from the media.
In addition, you can optionally rebuild the optical directory index by using the DIR parameter. If *ALL is specified in the Volume identifier field, the optical volume index is reclaimed for all volumes in the optical media library. If a specific volume name is entered in the Volume identifier field, the optical volume index is reclaimed for that volume only. The optical volume index is updated only for those volumes and libraries that are selected. Index information for other volumes and libraries remains unchanged. Each optical volume whose index is reclaimed will be mounted in an optical drive.
If all of the volumes in an optical media library are specified and an entry is in the internal library index but not in the optical volume index, an entry is created for the volume in the optical volume index and message OPT2105 is issued. If the volume is initialized, optical directory index entries are also created for each directory on the volume.
If an entry is in the optical volume index but not in the internal library index, message OPT2115 is issued. This message indicates that the volume status for that volume has been changed to *REMOVED.
