Ubuntu server 10.10 : How to remove old kernels you don’t need

root@hat1:~# cat /etc/lsb-release | tail -1 DISTRIB_DESCRIPTION="Ubuntu 10.10"

1. check current kernel version you are using

root@hat1:~# uname -r 2.6.35-27-server

2. check all kernel versions you have installed

root@hat1:~# dpkg -l | grep ^ii | grep 2.6.35 | awk '{print $2}' linux-headers-2.6.35-22 linux-headers-2.6.35-22-generic linux-headers-2.6.35-22-server linux-headers-2.6.35-23 linux-headers-2.6.35-23-generic linux-headers-2.6.35-23-server linux-headers-2.6.35-24 linux-headers-2.6.35-24-generic linux-headers-2.6.35-24-server linux-headers-2.6.35-25 linux-headers-2.6.35-25-generic linux-headers-2.6.35-25-server linux-headers-2.6.35-27 linux-headers-2.6.35-27-generic linux-headers-2.6.35-27-server linux-headers-generic linux-headers-server linux-image-2.6.35-22-server linux-image-2.6.35-23-server linux-image-2.6.35-24-server linux-image-2.6.35-25-server linux-image-2.6.35-27-server linux-image-server linux-libc-dev linux-server root@hat1:~#

3. remove 2.6.35-22

remove the following packages

root@hat1:~# dpkg -l | grep ^ii | grep 2.6.35 | awk '{print $2}' | grep 2.6.35-22 linux-headers-2.6.35-22 linux-headers-2.6.35-22-generic linux-headers-2.6.35-22-server linux-image-2.6.35-22-server

root@hat1:~# apt-get remove linux-headers-2.6.35-22 linux-headers-2.6.35-22-generic linux-headers-2.6.35-22-server linux-image-2.6.35-22-server <snip> Generating grub.cfg ... Found linux image: /boot/vmlinuz-2.6.35-27-server Found initrd image: /boot/initrd.img-2.6.35-27-server Found linux image: /boot/vmlinuz-2.6.35-25-server Found initrd image: /boot/initrd.img-2.6.35-25-server Found linux image: /boot/vmlinuz-2.6.35-24-server Found initrd image: /boot/initrd.img-2.6.35-24-server Found linux image: /boot/vmlinuz-2.6.35-23-server Found initrd image: /boot/initrd.img-2.6.35-23-server Found memtest86+ image: /boot/memtest86+.bin Found Windows 7 (loader) on /dev/sda1 done

grub.cfg will be updated automatically.