failed to update - CDROM

[Greyeagle Thornton]

============ Log ===========

Ign:1 cdrom://Linux Lite 5.0 - Release amd64 dists/ InRelease
Ign:2 cdrom://Linux 20.04 - Release amd64 dists/ InRelease
Err:3 cdrom://Linux Lite 5.0 - Release amd64 dists/ Release
  Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
Err:4 cdrom://Linux 20.04 - Release amd64 dists/ Release
  Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
Hit:5 http://archive.ubuntu.com/ubuntu focal InRelease
Hit:6 http://archive.ubuntu.com/ubuntu focal-backports InRelease
Hit:7 http://archive.ubuntu.com/ubuntu focal-security InRelease
Hit:8 http://archive.ubuntu.com/ubuntu focal-updates InRelease
Hit:9 http://archive.canonical.com/ubuntu focal InRelease
Hit:10 http://repo.linuxliteos.com/linuxlite emerald InRelease
Reading package lists...
E: The repository 'cdrom://Linux Lite 5.0 - Release amd64 dists/ Release' does not have a Release file.
E: The repository 'cdrom://Linux 20.04 - Release amd64 dists/ Release' does not have a Release file.

[Valtam]

Looks like you're running in a Live environment, once you install Linux Lite, you won't get this message.