Public bug reported:
Running apt-get update; apt-get upgrade for the first time in a few
months, I get an error
```
Writing GRUB to boot device failed - continue
GRUB failed to install to the following devices:
[*] /dev/nvme1n1p1 (104 MB; /boot/efi) 1000204 MB WDC WDS100T2B0C-00PXH0
```
Retrying fails.
Running
```
$ sudo dpkg-reconfigure --force grub-efi-amd64
```
Gives the following output:
```
Installing grub to /boot/efi.
Installing for x86_64-efi platform.
grub-install: warning: Internal error.
grub-install: error: failed to register the EFI boot entry: Operation not
permitted.
Installing grub to /boot/efi.
Installing for x86_64-efi platform.
grub-install: warning: Internal error.
grub-install: error: failed to register the EFI boot entry: Operation not
permitted.
Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/init-select.cfg'
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-5.4.0-53-generic
Found initrd image: /boot/initrd.img-5.4.0-53-generic
Found linux image: /boot/vmlinuz-5.4.0-52-generic
Found initrd image: /boot/initrd.img-5.4.0-52-generic
Found Windows Boot Manager on /dev/nvme1n1p1@/EFI/Microsoft/Boot/bootmgfw.efi
Adding boot menu entry for UEFI Firmware Settings
done
```
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: grub-efi-amd64 2.04-1ubuntu26.6
ProcVersionSignature: Ubuntu 5.4.0-52.57-generic 5.4.65
Uname: Linux 5.4.0-52-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.12
Architecture: amd64
CasperMD5CheckResult: skip
Date: Fri Nov 13 21:38:56 2020
InstallationDate: Installed on 2020-05-23 (175 days ago)
InstallationMedia: Xubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
SourcePackage: grub2
UpgradeStatus: Upgraded to focal on 2020-05-29 (169 days ago)
** Affects: grub2 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
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https://bugs.launchpad.net/bugs/1904263
Title:
Writing GRUB to boot device failed
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