I am running Ubuntu MATE on a Raspberry Pi. It is a pretty fresh install from Ubuntu MATE. I tried to run
sudo do-release-upgrade but received the following message:
Not enough free disk space The upgrade has aborted. The upgrade needs a total of 49.5 M free space on disk '/boot'. Please free at least an additional 5,390 k of disk space on '/boot'. You can remove old kernels using 'sudo apt autoremove' and you could also set COMPRESS=xz in /etc/initramfs-tools/initramfs.conf to reduce the size of your initramfs.
I tried the suggestions noted in warning to not avail. I referenced this question, but none of it appeared to work either. Running
dpkg -l | grep linux-image returns nothing. Looking at the output of
df -h, I understand the problem (there is only 43M available on boot), but what I am less certain of is what I can do to make room. There do not appear to any old kernels, and
autoremove did not work. What else can I do to clean
/boot and make room.
Sorry, I meant to actually show the output of
pi@kb-pi:/boot/grub$ df -h Filesystem Size Used Avail Use% Mounted on /dev/root 15G 4.0G 11G 28% / devtmpfs 459M 0 459M 0% /dev tmpfs 463M 452K 463M 1% /dev/shm tmpfs 463M 13M 451M 3% /run tmpfs 5.0M 4.0K 5.0M 1% /run/lock tmpfs 463M 0 463M 0% /sys/fs/cgroup /dev/mmcblk0p1 63M 21M 43M 34% /boot tmpfs 93M 32K 93M 1% /run/user/1000