1  DISMOUNT
   Releases a volume previously accessed by the EXCHANGE command
   MOUNT.

   Format

     DISMOUNT  device-name[:]
 

2  Parameters
 

device-name[:]

   Specifies the name of the device to be dismounted. You can
   specify a physical device name or a logical name assigned to
   a physical device name. If you omit a controller designation
   or a unit number, the defaults are controller A and unit 0,
   respectively. You can also specify the name of a virtual device.
 

2  Qualifiers
 

/MESSAGE

      /MESSAGE
      /NOMESSAGE

   Controls whether or not EXCHANGE displays a message that the
   volume was dismounted. The default is determined by the /MESSAGE
   qualifier on the EXCHANGE command when EXCHANGE was activated.
 

2  Description
   The DISMOUNT command closes all connections that EXCHANGE
   maintains to the device. This command does not affect the state
   of the operating system mount; the device remains accessible
   to OpenVMS. If you do not use the DISMOUNT command, an implicit
   DISMOUNT is automatically executed when you exit EXCHANGE.

   The DISMOUNT command is valid only with foreign devices.
 

2  Example

 EXCHANGE> MOUNT/FOREIGN MTA0:
 EXCHANGE> COPY MTA0:AVERAGE.FOR/VOLUME=DOS11 *
 EXCHANGE> DISMOUNT MTA0:

     The first command in this example mounts the tape on the device
     MTA0. The second command in this example transfers a file from
     the magnetic tape to the current default directory. The last
     command releases EXCHANGE's access to the volume; however,
     the volume is still mounted on the operating system and is
     accessible to OpenVMS.