To get a report of how much disk space is available and what is taking up the space where; terminal code:
IF indeed you find that boot is full, This method to delete old kernels and headers:
The command in terminal:
will tell you which kernel you are running....then:
-- if you have the disk space--
Go to Synaptic Package Manager select status on the left-lower pane and select installed on the left-upper pane and search for linux-image.
select the ones you want deleted. listed in the right-upperpane.
and mark for removal/complete removal.
Click the Apply button in the toolbar and then Apply in the summary window that pops up. Close Synaptic Package Manager.
if spm is not installed; terminal code:
In addition to linux-image, also remove old versions of linux-headers and linux-restricted-modules (if you have them).
sudo apt-get install synaptic
To look at the disk usage:
by directories ->change the /home in the above to different directories to "see". Pay particular attention to the /var/log/ directory...many times there exist lots of old files.; And it does happen there is a system problem the system is advising of that results in extremely large log files.
du -h /home | sort -nr | less
just try'n to help <== BDQ