Is it possible to upgrade a Debian 8 (Jessie) to 9, 10, 11 and eventually 12? It is reccomended to upgrade one release at a time. But! 9’s repositories are archived. How can I upgrade form 8 to 9?
Thank you in advance!
Tbh… Itd probably be easier to back up files and settings and do a clean install of 12. If you try to upgrade in a chain like what you are wanting to do, not only is it going to be very tedious, something is virtually certain to break in a way that will make it much easier to just install from scratch.
It’s maybe possible but pain. I tried once and it lasts hours and hours. It’s easier to install new and migrate your configs.
Yes that’s the recommended path.
Information on how to upgrade can be found in the official documentation:
https://www.debian.org/releases/stretch/amd64/release-notes/ch-upgrading.html
https://www.debian.org/releases/buster/amd64/release-notes/ch-upgrading.html
https://www.debian.org/releases/bullseye/amd64/release-notes/ch-upgrading.html
https://www.debian.org/releases/bookworm/amd64/release-notes/ch-upgrading.html
As others pointed out it might be a PITA. Depending on your installed software and configuration a new install might be easier.