Boot Directory Full

sudo du -sh /boot/*

Then you can run to check the old kernal list that is taking up space as well with

dpkg --list | grep linux-image

I would only remove the really old kernels, you can do so with this command

sudo apt-get purge linux-image-X.X.X-XX (The “X” being the version of the kernels you want to remove)

can you can remove some APT cache files as well running the following

sudo apt-get clean

You can take screenshots and we can go through it together if you run into any issue or problems

• sudo apt auto-remove - removes any old unnecessary unused apt packages that are taking up space also within the boot directory