It’s been a while but for me personally, the number one thing that saves your ass in event of failure is installing both the up to date and the LTS kernel. If you fail to boot, it’s gonna have something to do with a kernel update 90% of the time, in which case you just boot with the LTS kernel. Just about anything else can be fixed either while you’re up and running, or with a live distro installed on a USB.
It’s been a while but for me personally, the number one thing that saves your ass in event of failure is installing both the up to date and the LTS kernel. If you fail to boot, it’s gonna have something to do with a kernel update 90% of the time, in which case you just boot with the LTS kernel. Just about anything else can be fixed either while you’re up and running, or with a live distro installed on a USB.