Catalina, SuperDrive, Illustrator Files on CD

macOS 10.12 and later does not support the old format, HFS.
Previously available environments are presumed to be version 10.11 or lower.

# Merged due to duplicate posts.

Then most probably the CD was made using an old file system. You have to find a Catalina driver for those old Mac file systems. I would try to ask on the Apple forums.

Hi - I have some old Illustrator/Vector files on CDs.  I tried to access them today and my Mac (Catalina) doesn't seem to recognize CDs with Illustrator Files? 

In System Preferenences - I can set up what the SuperDrive will do with Blank CDs, Picture CDs, Music CDs, or Movies.   But this CD is filled with Adobe Illustrator Files and nothing happens when I play it.  It doesn't even show up on Finder or Spotlight.

Any tips?

(The CDs are pretty old - but I've used them fine before I upgraded to Catalina)