If the drive is connected via USB, pull the plug and reinsert. This works for my Pioneer drive.

How did you eject the DVD? By a button on the front of the drive, or via the menu bar on the computer?


iMac (19,1, 3.1 GHz i5, 12.7.4, 40 Gb RAM); MacBook Air (1.8 Ghz, 8 Gb RAM, 10.14.6, 256 Gb SSD) Vodafone router and Devolo Wi-Fi Extender, Canon TS8351 printer/scanner.