It also happened to me, right now.
Fixed the following way: -Boot from a pendrive -Mount my root file system (where /boot is) -run: "sudo grub-install --boot-directory=/mnt/<sth>/boot /dev/sdX" Then reboot with HDD
I would say, otherwise it works well, but this was a surprise.
It also happened to me, right now.
Fixed the following way: directory= /mnt/<sth> /boot /dev/sdX"
-Boot from a pendrive
-Mount my root file system (where /boot is)
-run: "sudo grub-install --boot-
Then reboot with HDD
I would say, otherwise it works well, but this was a surprise.