Once upon a time, Brian Mathis <brian.mathis+centos at betteradmin.com> said: > if grep -q debug /proc/cmdline; then > echo "Kernel and systemd debugging was enabled as part of an errant > script during the yum update" > echo "See https://bugs.centos.org/view.php?id=12425 and > https://wiki.centos.org/HowTos/Grub2" > fi Assuming your GRUB entries are in the usual order (newest kernel first), you can do: grub2-set-default "$(grep '^menuentry' /boot/grub2/grub.cfg | grep -v debug | head -n 1 | cut -d\' -f2)" and then reboot. -- Chris Adams <linux at cmadams.net>