Your sarcasm was duly noted if only for it being so amusing!
E: Failed to fetch cdrom://Linux Mint 18.3 _Sylvia_ - Release amd64 20171213/dists/xenial/contrib/binary-i386/Packages...
LOL Guess some folks have to have it spelled out. I need to know what the command for implementing apt-cdrom to configure recognition of a pendrive running "live" LM 18.3. Yes, apt-cdrom is the...