If you want to test your luck, increase the default grub timeout in "/etc/default/grub" to 15 and rebuild the grub menu via 'grub2-mkconfig -o /boot/grub2/grub.cfg'

If the issue occurs to you - just append 'enforcing=0' to your kernel and the issue will be over.

Of course, you can always rollback either from a rescue DVD or from the running 'enforcing=0' system.

Best Regards,

Strahil Nikolov