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The UNLOAD command rewinds a magnetic tape until it is returned
completely to the source reel, and puts the associated tape drive
offline. Use UNLOAD only for tapes mounted on drives having device
names of the form MTAn:.
@UNLOAD (DEVICE) dev:
dev: is the name of the magnetic tape drive that you want to
UNLOAD With Open Files
If you have given a CTRL/C to exit from a program that has
opened a magnetic tape drive and you then gave the UNLOAD
command for that tape drive, the system will first ask if
you want to close the associated file. You must do so for
UNLOAD to succeed, but you will probably be unable to
continue the program from that point because the file will
now be closed.
UNLOAD Not for MOUNTed Drives
Use the UNLOAD command for tape drives obtained with the
ASSIGN command. Use DISMOUNT for a tape drive obtained with
Cannot Access Tape Again
The UNLOAD command makes it impossible to access your tape
again unless it is reloaded by the operator.
ASSIGN for assigning a tape drive to your job
DISMOUNT for unloading tapes mounted on devices of the form
REWIND for rewinding a magnetic tape volume or tape set to
its load point (logical beginning)
1. Unload your magnetic tape from drive MTA0:.