Removing old kernel

The best way to remove all files and directories associated with a kernel that is no longer needed is the following:

1. rm /boot/vmlinuz-2.6.
2. rm /boot/config-2.6.
3. rm /boot/initrd-2.6
4. rm -Rf /lib/modules/2.6.5
5. run grub or edit /boot/grub/grub.conf