Bug#913916: grub-efi-amd64: UEFI boot option removed after update to grub2 2.02~beta3-5+deb9u1

[Tobias Hansen]

Package: grub-efi-amd64
Version: 2.02~beta3-5+deb9u1
Severity: critical

After updating grub2 in Debian stable to 2.02~beta3-5+deb9u1 the UEFI boot option was removed on my Dell Latitude 5480. After rebooting I was greeted with "No bootable devices found". In the setup utility (reached by pressing F2) the UEFI boot sequence was empty. I could fix the problem by adding a new boot option, selecting the file EFI/debian/grubx64.efi.

I could reproduce this by downgrading the installed grub2 packages (grub2-common, grub-common, grub-efi-amd64, grub-efi-amd64-bin) to 2.02~beta3-5, making sure the boot option is there, and updating the packages to 2.02~beta3-5+deb9u1 again. After the update the boot option is gone. Just rebooting with either of the versions does not remove the boot option.

There is no indication during the update that something went wrong:

Setting up grub-efi-amd64 (2.02~beta3-5+deb9u1) ...

Installing for x86_64-efi platform.

Installation finished. No error reported.

Generating grub configuration file ...

Found background image: .background_cache.png

Found linux image: /boot/vmlinuz-4.9.0-8-amd64

Found initrd image: /boot/initrd.img-4.9.0-8-amd64

Found linux image: /boot/vmlinuz-4.9.0-7-amd64

Found initrd image: /boot/initrd.img-4.9.0-7-amd64

Adding boot menu entry for EFI firmware configuration

done

Best,
Tobias