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Whenever I try to update the software using Software Updater, I get this dialog:
which prevents me from getting the upgrade - and going through apt-get upgrade results in partially upgraded sotware. Also, I've done the cleaning suggested in the last sentence. It still shows up.
The only left thing to try is dealing with /boot, but I do not know what can be deleted and what has to be untouched.
Which is the best, "elementary-backed" solution to the problem?
One way to safely free space in the /boot folder that works for every derivative of Ubuntu is the following:
Open the Terminal application and type uname -r to get the current version of the kernel used by your system.
Get a list of all the installed kernel by typing
dpkg -l linux-{image,headers}-"[0-9]*" | awk '/^ii/{ print $2}' | grep -v -e uname -r | cut -f1,2 -d"-" | grep -e '[0-9]'
For ones who'd like to know how that works. There's a similar answer on AskUbuntu from which I've taken the information; kudos to Kultom, who linked it in a comment.
sudo apt-get -y purge to remove all the old kernels. Thus, you will finally have to typedpkg -l linux-{image,headers}-"[0-9]*" | awk '/^ii/{ print $2}' | grep -v -e uname -r | cut -f1,2 -d"-" | grep -e '[0-9]' | xargs sudo apt-get -y purge
It worked well for me and many users gave positive feedback on this procedure. It is not strictly "elementary-backed", but it works.
