You have a butt load of older kernels insrtalled, and they take up a significant amount of disk space. Do as apt is telling you to remove them and the no-longer needed packages by running:
sudo apt-get autoremove
Then run:
sudo apt-get update
to ensure the package cache is fully up to date.
sudo apt-get autoremove
Then run:
sudo apt-get update
to ensure the package cache is fully up to date.
Comment