Set MakeMKV installed with snap to see optical drive
Solution 1:
To fix Snap you have to connect the following Snap interfaces:
snap connect makemkv:optical-write
snap connect makemkv:removable-media
Nice way to fix it with 100% success is to use deb-package from PPA. Install it with:
sudo add-apt-repository ppa:heyarje/makemkv-beta
sudo apt-get update
sudo apt-get install makemkv-bin