Hi all.
Start with the fundamentals.....
ls -l /etc/passwd /etc/shadowAre the permissions correct?
I did even a ls -lZ and the permissions look okay for me.
grep meikel /etc/passwd /etc/shadowIs the user present in both files?
Yes, it is.
If the above looks good, try adding a new user and see if you can login as that user.
It is not clear to me how I can do this, as I'm only able to start from a live media. If I run something like "useradd" this will add a user on the live media, but not on the installed system on the disk. As far as I know I need to chroot into the existing installation from the live media, but I never did that. With a quick search on the internet I found a sample script "Setting up chroot from a live image in Fedora. Regenerate grub2 for Fedora." (https://gist.github.com/Tamal/73e65bfb0e883e438310c5fe81c5de14) and I'm wondering if I could use this as a starting point?
Regards,
Meikel