Now that Chrome OS 80 is out, any new Linux Crostini containers will run Debian Buster instead of Stretch. I restored a Stretch container backup on Buster but it didn’t work.
Chrome OS 80 planned for Debian 10 Buster Linux support
Debian Buster arrived in July but the Crostini container for Linux on Chromebooks wasn’t ready for it. Now, after months of work, it looks like Chrome OS 80 is the planned implementation.
Debian 10 Buster expected this week, but not for Linux on Chromebooks (unless you manually upgrade)
Debian 10 Buster lands this week but Linux on your Chromebook will still run Debian 9 Stretch for some time. If you want to upgrade your Project Crostini container to Buster in advance, here’s how.