Hi @tallsamurai,
I suspect it’s due to the most recent update. As per the update announcement:
- Grub got some needed security updates . Note that os-prober is now disabled by default for security reasons: broken patch ; fixed patch . More infos about it here . To restore the old behavior, open a terminal and issue
sudo echo GRUB_DISABLE_OS_PROBER=false >> /etc/default/grub && sudo update-grub