Updating Debian Linux
Debian is the default GNU/Linux distribution installed on ChromeOS devices that support Linux. It is important to perform regular updates to your Debian installation in order to keep your installation secure, improve compatibility and add additional features.
Perform Regular Backups of Your Linux Conatiner
Updating Debian is generally considered safe however it is still strongly advised to perform regular backups of your container, especially before performing major operating system updates
You can update Debian by launching the ChromeOS Linux Terminal and running the following commands. It is strongly advised to save all open files and close any linux application prior to starting the update process.
sudo apt update sudo apt upgrade
You will be presented with a list of proposed updates to review. Type "Y" followed by the enter key to begin the update process. This may take several minutes depending on the number of changes and your internet speed. This process will also update any third party packages that you have installed via the apt package manager such as LibreOffice, GIMP or Blender.