MetaNorm In the meantime, I had "systemctl status systemd-fsck-root.service" displayed. This is the output:
clauded I would follow onscreen instructions: run fsck manually on the device shown (/dev/disk/by... or /dev/mapper/...).
MetaNorm clauded run fsck manually on the device shown (/dev/disk/by... That did it! Thank you all for your support! I'm very happy. Can be marked as solved.
clauded By searching Google, you'll find plenty of examples like this one : https://www.tecmint.com/fsck-repair-file-system-errors-in-linux/
ReillyBrogan Here's the boot rescue documentation BTW: https://github.com/getsolus/help-center-docs/blob/master/troubleshooting/boot-rescue/en.md