Today when logging into my server, I noticed the kernel was not up to date. After a brief investigation and subsequent system update, I noticed the newer kernel was not starting. So connected a keyboard and monitor and started to investigate further. To resolve this, I connected a keyboard and monitor to investigate further. This server has been running for a prolonged period. The harddisk was transfered from an earlyer system and the Ubuntu 20.04 is started by a grub entry on an Ubuntu 22.04 installed on the first disk. So I started out updating that Ubuntu version first (a desktop edition). This made the newer kernel of the Ubuntu 20.04 server on the second disk start. After starting the new kernel on the server, I decided to give the server a release upgrade, something I had put off for some time. It Seems like a good preparation for the next upcomming Ubuntu LTS, the server was still running on Ubuntu 20.04 LTS and had to be upgraded to Ubuntu 22.04 LTS as a preperation for upgrading to Ubuntu 24.04 LTS. After the release upgrade, I started the Ubuntu 22.04 LTS Desktop edition on the first disk and did a grub update to reflect the update in the grub menu for starting the Ubuntu 22.04 LTS on de second disk. The server started fine after, just had to reinstall git and do a little update to the /etc/sudoers file.