Upgrade your Debian server to Bookworm without breaking the OS

In this video I show you some of the most important things to do when upgrading your server from Debian 11 to 12.

We'll see that you can't simply change the APT sources files and upgrade, hoping for the best, but there are a few steps to clean up your system before actually upgrading.

Links:

- Debian upgrade guide: https://www.debian.org/releases/stable/amd64/release-notes/ch-upgrading.en.html
- Issues to be aware of for bookworm: https://www.debian.org/releases/stable/amd64/release-notes/ch-information.en.html
- Debian: https://www.debian.org

CHAPTERS

0:00 Intro
0:37 Overview of the main document
1:02 Do a normal upgrade first
1:32 Some important software updates in Bookworm
2:42 Remove backports packages and their sources
3:20 Remove obsolete and non-Debian packages
3:39 Modify the APT sources list
3:50 Do the partial upgrade first then the full upgrade
4:26 Post upgrade cleanup
4:35 Outtro

#debian #bookworm #upgrade