It may have been rebuilding the initramfs if there was a kernel
update
or an SELinux relabel operation (really common on an upgrade, say from
F27->F28). If it happens again and if you have an LED showing disk
activity, watch it. If it's blinking like mad or on steadily, that's
probably what's going on (I love LEDs...but I also liked front panels
on my Imsai, Altair and PDP-11s).
The first boot after an upgrade always seems to take a while for me, so
when I do it I just take a coffee break for 10 minutes or so. If things
aren't working by then, I go into spelunker mode to sort it out.
Then do you think I should run manually the SElinux relabeling?
Because I may have stopped it when I turned the computer off?
What about the initramfs thing?
F