For successful ejecting of a tape from a tape library, the tape library must have the mail slot and the slot must not be locked by a user or by other software.
To eject a tape:
Details. You can disable the tape description prompt by clicking Do not show this message again. To re-enable the prompt: click Options on the menu, then click Console options, click Pop-up messages, and then select the Request description when ejecting a tape check box.
After a tape is ejected either manually or automatically, it is recommended to write its name on the tape.