External dvd drive in disk utility but not on desktop
I have a Mac mini running the latest High Sierra OS. I need to copy old photo cds to an external hard drive, but it's not showing as mounted on my desktop. When I check Disk Utility, it shows up there.
Why is it not showing on the desktop, and what can I do to fix the situation?
Thank you.
Mac mini, macOS High Sierra (10.13.3)