Removing Old Kernel

Each version of the kernel can occupy up to 150 MB. If you have downloaded the headers you get 250 MB of space.

To view the installed kernels

dpkg --list | grep linux-image

Lists the headers installed

ls /usr/src | grep 'linux-headers'

First remove the headers using somethings like this

sudo apt-get purge linux-headers-3.8.0-19

then remove any specific kernel that is no longer needed

sudo apt-get purge linux-image-3.8.0-19-generic

 

Command list for cleaning and repairing

#houseclean

sudo apt-get autoclean # only removes files that cannot be downloaded anymore (obsolete)
sudo apt-get clean

 

#refresh

sudo apt-get update #resync package index
sudo apt-get upgrade #newest versions of all packages, update must be run first

#would upgrade you to the latest kernel in the repositories
#dist-upgrade is also able to remove existing packages if required

sudo apt-get dist-upgrade

# fix Broken packages -f

sudo apt-get -f install
sudo dpkg --configure -a

# Remove lock
# If you are absolutely sure you do not have another upgrade process running.
# Locked dpkg - only if sure you are not running another update.

sudo rm /var/lib/dpkg/lock
sudo dpkg --configure -a

# added zika's tip for problems with hash sum mismatch

sudo rm /var/lib/apt/lists/*
sudo apt-get update