I want to upgrade my 18.04.6 LTS to the next LTS, but it won't let me because it thinks there are updates I should do first. However, these updates don't work and error with a "check your internet connection", I think because they are now only available as extended support.
I've tried changing /etc/apt/sources.list to use old-releases.ubuntu.com, but it does not seem to help.
# deb cdrom:[Ubuntu 14.04 LTS _Trusty Tahr_ - Release amd64 (20140417)]/ trusty main restricted
See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
newer versions of the distribution.
deb http://old-releases.ubuntu.com/ubuntu bionic main restricted
deb-src http://old-releases.ubuntu.com/ubuntu bionic main restricted
Major bug fix updates produced after the final release of the
distribution.
deb http://old-releases.ubuntu.com/ubuntu bionic-updates main restricted
deb-src http://old-releases.ubuntu.com/ubuntu bionic-updates main restricted
N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
team. Also, please note that software in universe WILL NOT receive any
review or updates from the Ubuntu security team.
deb http://old-releases.ubuntu.com/ubuntu bionic universe
deb-src http://old-releases.ubuntu.com/ubuntu bionic universe
deb http://old-releases.ubuntu.com/ubuntu bionic-updates universe
deb-src http://old-releases.ubuntu.com/ubuntu bionic-updates universe
N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
team, and may not be under a free licence. Please satisfy yourself as to
your rights to use the software. Also, please note that software in
multiverse WILL NOT receive any review or updates from the Ubuntu
security team.
deb http://old-releases.ubuntu.com/ubuntu bionic multiverse
deb-src http://old-releases.ubuntu.com/ubuntu bionic multiverse
deb http://old-releases.ubuntu.com/ubuntu bionic-updates multiverse
deb-src http://old-releases.ubuntu.com/ubuntu bionic-updates multiverse
N.B. software from this repository may not have been tested as
extensively as that contained in the main release, although it includes
newer versions of some applications which may provide useful features.
Also, please note that software in backports WILL NOT receive any review
or updates from the Ubuntu security team.
deb http://old-releases.ubuntu.com/ubuntu bionic-backports main restricted universe multiverse
deb-src http://old-releases.ubuntu.com/ubuntu bionic-backports main restricted universe multiverse
deb http://old-releases.ubuntu.com/ubuntu bionic-security main restricted
deb-src http://old-releases.ubuntu.com/ubuntu bionic-security main restricted
deb http://old-releases.ubuntu.com/ubuntu bionic-security universe
deb-src http://old-releases.ubuntu.com/ubuntu bionic-security universe
deb http://old-releases.ubuntu.com/ubuntu bionic-security multiverse
deb-src http://old-releases.ubuntu.com/ubuntu bionic-security multiverse
Uncomment the following two lines to add software from Canonical's
'partner' repository.
This software is not part of Ubuntu, but is offered by Canonical and the
respective vendors as a service to Ubuntu users.
deb http://old-releases.ubuntu.com/ubuntu bionic partner
deb-src http://old-releases.ubuntu.com/ubuntu bionic partner`
$ sudo apt update
Ign:1 http://old-releases.ubuntu.com/ubuntu bionic InRelease
Ign:2 http://old-releases.ubuntu.com/ubuntu bionic-updates InRelease
Ign:3 http://old-releases.ubuntu.com/ubuntu bionic-backports InRelease
Ign:4 http://old-releases.ubuntu.com/ubuntu bionic-security InRelease
Err:5 http://old-releases.ubuntu.com/ubuntu bionic Release
404 Not Found [IP: 185.125.190.37 80]
Err:6 http://old-releases.ubuntu.com/ubuntu bionic-updates Release
404 Not Found [IP: 185.125.190.37 80]
Err:7 http://old-releases.ubuntu.com/ubuntu bionic-backports Release
404 Not Found [IP: 185.125.190.37 80]
Hit:8 https://esm.ubuntu.com/infra/ubuntu bionic-infra-security InRelease
Err:9 http://old-releases.ubuntu.com/ubuntu bionic-security Release
404 Not Found [IP: 185.125.190.37 80]
Hit:10 https://esm.ubuntu.com/infra/ubuntu bionic-infra-updates InRelease
Reading package lists... Done
E: The repository 'http://old-releases.ubuntu.com/ubuntu bionic 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 'http://old-releases.ubuntu.com/ubuntu bionic-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 'http://old-releases.ubuntu.com/ubuntu bionic-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.
E: The repository 'http://old-releases.ubuntu.com/ubuntu bionic-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.
