Devuan GNU+Linux is a free software operating system for your computer. Free software means you are free to use, copy and distribute, study, change the software, and share your modifications with the community.

Upgrade to Chimaera

Important: Please do read the Devuan Chimaera Release Notes which detail significant changes between the previous and current release.

This document describes how to upgrade to Devuan Chimaera from an existing Devuan Beowulf system. This should not be used for migrations from Debian.

For best results during an upgrade scenario, shutting down all non-essential software is recommended. For example, one might choose to shut down the X graphical environment, and type the upgrade commands below from a virtual terminal (Control-Alt-F1 through Control-Alt-F6).

Note that skipping releases is not supported. Upgrade to Devuan Beowulf and ensure that the existing installation is fully up to date before proceeding.

root@devuan:~# apt-get update && apt-get upgrade

Next change /etc/apt/sources.list so that it points to the Chimaera repositories.

root@devuan:~# editor /etc/apt/sources.list

Modify sources.list to look like the one provided. Comment out all other lines.

deb chimaera main
deb chimaera-updates main
deb chimaera-security main
#deb chimaera-backports main

Note that all software shipped with Devuan in the main component is free software. But if needed, non-free software is also available. Just add the non-free and contrib components to the appropriate line(s) in /etc/apt/sources.list as required:

deb chimaera main non-free contrib

Now update the package lists from the Chimaera repository.

root@devuan:~# apt-get update

If xscreensaver is running, kill it now as it needs to be stopped before it can be upgraded.

root@devuan:~# killall xscreensaver

Now perform the upgrade. It is worth doing this in two stages: upgrade and dist-upgrade

root@devuan:~# apt-get upgrade
root@devuan:~# apt-get dist-upgrade

In the event of any package failures, fix the failed packages then start the upgrade again.

root@devuan:~# apt-get -f install
root@devuan:~# apt-get dist-upgrade

It is usually worth removing packages that were orphaned by the upgrade process and old package archives.

root@devuan:~# apt-get autoremove --purge
root@devuan:~# apt-get autoclean

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