how-to-remove-old-linux-kernels-ubuntu how-to-remove-old-linux-kernels-ubuntu how to remove old linux kernels ubuntu Warning if you remove your running kernel you will be in trouble. .. code-block:: bash cd /boot # determine running kernel uname -r # delete old kernels but leave the most recent three as a backup # example: sudo apt-get remove –purge linux-image-x.x.xx-xx-server sudo apt-get remove –purge linux-image-2.6.32-3[012]-server Good luck and be careful list all software installed .. code-block:: bash dpkg –list | less