root@kvm1:/# sudo apt update
Ign:1
archive.ubuntu.com/ubuntu disco InRelease
Ign:2
security.ubuntu.com/ubuntu disco-security InRelease
Ign:3
archive.ubuntu.com/ubuntu disco-updates InRelease
Err:4
security.ubuntu.com/ubuntu disco-security Release
404 Not Found [IP: 91.189.88.152 80]
Ign:5
archive.ubuntu.com/ubuntu disco-backports InRelease
Err:6
archive.ubuntu.com/ubuntu disco Release
404 Not Found [IP: 91.189.88.142 80]
Err:7
archive.ubuntu.com/ubuntu disco-updates Release
404 Not Found [IP: 91.189.88.142 80]
Err:8
archive.ubuntu.com/ubuntu disco-backports Release
404 Not Found [IP: 91.189.88.142 80]
Reading package lists... Done
E: The repository '
security.ubuntu.com/ubuntu disco-security Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The repository '
archive.ubuntu.com/ubuntu disco Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The repository '
archive.ubuntu.com/ubuntu disco-updates Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The repository '
archive.ubuntu.com/ubuntu disco-backports Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
