Updating Ubuntu when /boot partition is almost full
Solution 1:
try
to check installed kernels first
dpkg --list | egrep -i --color 'linux-image|linux-headers' | wc -l
to delete older versions of kernel
sudo apt --purge <kernel> autoremove
or
sudo apt-get --purge <kernel> autoremove
its mostly wise to keep older kernels to revert back to incase u face some problems