I'm trying to update from lunar to noble. I can't directly upgrade from lunar to noble and get an error:
An upgrade from 'lunar' to 'noble' is not supported with this tool.
So I tried to update to mantic version first:
wget https://old-releases.ubuntu.com/ubuntu/dists/mantic-updates/main/dist-upgrader-all/current/mantic.tar.gz
mkdir upgrader
tar -xaf mantic.tar.gz -C upgrader
cd upgrader
sudo ./mantic
After run tool I firsfully get message from upgrader:
Third party sources disabled
Some third party entries in your sources.list were disabled. You can re-enable them after the upgrade with the 'software-properties' tool or your package manager.
After closing alert, I faced an error:
Error during update
A problem occurred during the update. This is usually some sort of network problem, please check your network connection and retry.
W:Updating from such a repository can't be done securely, and is therefore disabled by default.,
W:See apt-secure(8) manpage for repository creation and user configuration details.,
E:The repository 'http://archive.ubuntu.com/ubuntu mantic Release' does not have a Release file.,
W:Updating from such a repository can't be done securely, and is therefore disabled by default.,
W:See apt-secure(8) manpage for repository creation and user configuration details.,
E:The repository 'http://archive.ubuntu.com/ubuntu mantic-updates Release' does not have a Release file.,
W:Updating from such a repository can't be done securely, and is therefore disabled by default.,
W:See apt-secure(8) manpage for repository creation and user configuration details.,
E:The repository 'http://security.ubuntu.com/ubuntu mantic-security Release' does not have a Release file.
Please help me solve this problem. I don't understend why I have problems with mantic repositories and how to fix it.
