![]() ![]() These have now been added to my buster cleanup code in Puppet. Packages I found lingering around from previous Debian versions: The release notes also suggest cleaning up before attempting an update, for good reasons. Pre-Update cleanupįor numerous reasons my VMs tend to be long-lived, and are not always “100% pristine”. Notably absent here are setups with many block devices I will try upgrading such systems at a later date. Depending on the VM, lots of third-party repositories are present (at least: Puppet).Updates are installed by unattended-upgrades.Networking is either systemd-networkd or ifupdown.Most config is either managed by Puppet, or just left at the OS defaults.My VMs tend to follow a slimmed down variant of the setup scheme dubbed “Wiener Melange”. Many things mentioned here are also noted in the official Release Notes. While I am already running a few VMs on bullseye/sid, only today I tried upgrading from Debian 10 “buster”. To perform the minimal system upgrade first, run the command shown below.Debian 11 “bullseye” should be getting released soon. In the minimal upgrade, you will update and upgrade all the available packages without installing or removing any other packages. So the Debian developers recommend a two-part upgrade process to avoid the removal of the packages. In some cases, doing the full upgrade might remove the large number of packages you want to keep. The next step is to update the repository to let the system recognize the newly added repo URLs. Perform a Minimal System Upgrade FirstĪt this point, your Debian 10 system is ready for the upgrade. cat /etc/apt/sources.list deb bullseye mainĭeb-src bullseye-updates main 5. The final sources.list file should look like the ones below. ![]() Run the following apt commands in the terminal. Update All Currently Installed Packagesīefore upgrading from Debian 10 to Debian 11, it’s important to ensure your currently installed Debian 10 system is up to date. Just make sure your data are placed in a safe location. If you wish to use any other backup software, you are free to do so. You can also create a complete system image of your current Debian installation with a dedicated system imaging software like CloneZilla. You can manually copy important files to a different device (second hard disk, USB drive, another computer on the network, etc.). Therefore, you must have your valuable data safely copied to a backup location, so you can restore it if there are any problems or complications. The Debian upgrades are usually safe, but there is always a chance something may go wrong. The upgrade process is simple and assumes you are running in the root account. Let’s now focus on how you can upgrade from Debian 10 Buster to Debian 11 Bullseye. Debian 11 will receive support for the next five years just like any other Debian stable version. It comes with many new features as most of the software in this version has been updated. On August 14th, 2021, the Debian project finally released a stable version of Debian 11 Bullseye after over two years of development. This step-by-step tutorial will show you how to safely upgrade Debian 10 Buster to Debian 11 Bullseye from the command line. ![]()
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