Managed to fix the issue mentioned in my previous post.

Looks like the system upgrade messed up generating the config during the system upgrade process.

The first time, with the blockdev error and second time, it was missing an initrd directive.

So I booted into the previous installation (which was still available as I made the grub menu visible as part of my Ansible playbook)

Inside the old installation, I just regenerated the grub configs:

sudo grub2-mkconfig -o /etc/grub2.cfg
sudo grub2-mkconfig -o /etc/grub2-efi.cfg

And this readded the initrd line and now I am able to boot into F38. Everything still works, I have some errors with VirtualBox and qemu that I will need to fix at some point:

• VirtualBox has an error when you start it saying “Unable to enumerate USB”
• Qemu has a dependency error (must have changed between F36 and F38) so I’ll need to probably remove and reinstall that.