@CKB
Not sure it this might help you. But I have configured my OS to run "read-only". It helps for longer lasting SD cards and it will usually not corrupt upon power outage.
If you are interested, you might search for "Raspbian Read only".
See below my filesystems (just the main parts):
And this is /etc/fstab:
PARTUUID=7965901e-01 /boot vfat ro,defaults 0 2 PARTUUID=7965901e-02 / ext4 ro,defaults,noatime 0 1 # a swapfile is not a swap partition, no line here # use dphys-swapfile swap[on|off] for that tmpfs /tmp tmpfs nodev,nosuid 0 0 tmpfs /var/log tmpfs nodev,nosuid 0 0 tmpfs /var/tmp tmpfs nodev,nosuid 0 0 tmpfs /var/cache tmpfs nodev,nosuid 0 0Greetings
/KNEBB