How to free up room on /boot

If you've been running Ubuntu for a while and have a smallish /boot drive, then chances are you might run out of space on it. This happens to me at least every few months and this is what I do:

Step 1.

Check which kernel version you're currently running. You definitely don't want to delete the one you're using.

Step 2.

Find out which kernels you have installed and don't need:

Step 3.

Removed unwanted / unneeded kernels.

For example:

Make sure to leave at least a few previous images in case you need to roll back to an older image.

Step 4

Check how much room you've freed.

If you are happy with the amount of available space, then continue. If not, go back and remove some more images.

Step 5

Use autoremove to clean out the packages you no longer need.

Step 6 (optional)

If you are using Grub and want to clear out old packages from your boot menu, use the following command:

All done!