Yesterday I booted up Kali Linux on my laptop only to find the error “end Kernel panic – not syncing: VFS: Unable to mount root fs on unknown block” after selecting the latest kernel. I rebooted, chose “Advanced Options for Kali GNU/Linux” as per below, then chose an older kernel and managed to boot in to Kali Linux.                             To resolve the issue I had to run the below steps to list and delete the oldest kernel installed. In the end, the cause of the error was that boot did not have enough disk space left thus…