zstd: error 70 no space left
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Remove old kernel images that are cluttering the system
Most of these errors are due to low or not enough space left in the root partition.
If you are using a Debian flavor:
sudo apt-get autoremove --purge
Inform grub whenever an old kernel is removed:
update-grub
Remove the un-used kernel config files:
These will be the files pre cursed as ‘rc’ where installed kernels use ‘ii’
… As well as files no longer used or required due to dependencies
This command will detect, print, and remove left over cruft from previously installed packages or scripts, that have been removed or updated.
sudo dpkg --purge $(dpkg -l | awk '/^rc/{print $2}')
You can re-run the following to view the installed kernel(s):
dpkg --list | grep linux-image