Remove old Unused Linux Kernels in Ubuntu
If you are using your Ubuntu system for some long time and keep updating your system to latest, then you will end up a lot of Linux Kernel version installed on your Ubuntu system. During the Linux kernel update the older version of linux kernel not automatically removed. It stays in your system and eating some of your system space. Using the below methods you can remove the old Unused Linux Kernels in Ubuntu system.
Note: Sometimes keeping the old Linux kernel is useful to troubleshoot the current kernel problem. And keep at least one or two old kernels to troubleshoot or fall back.