I tried to drag a DVD to VLC app. Instead the entire DVD/CD drive just disappeared from Finder. The drive is still there: I can play a DVD on it. But it does not show up in Locations.
Update 6 months later I have tried two different external Cd/DVD drive's: both can play DVD/USB's but neither show up in Finder.
Note that it is enabled in the Preferences:
How can the DVD/CD drive be re-added to Finder? I am on Catalina with a Macbook Pro 2020.
Update Here are the Sidebar settings - showing that the External disks and CDs, DVDs, Ipods are enabled: