[Bug 2129191] Re: package grub-efi-amd64 2.12-5ubuntu11 failed to install/upgrade: installed grub-efi-amd64 package post-installation script subprocess returned error exit status 1

[Mate Kukri]

Have you modified any files in /etc/grub.d or /etc/default/grub?

** Changed in: grub2-unsigned (Ubuntu)
       Status: New => Incomplete

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Title:
  package grub-efi-amd64 2.12-5ubuntu11 failed to install/upgrade:
  installed grub-efi-amd64 package post-installation script subprocess
  returned error exit status 1

Status in grub2-unsigned package in Ubuntu:
  Incomplete

Bug description:
  My grub files are corrupted and i am unable to edit / modify my grub.
  Because of this my system is also not getting updates.

  ProblemType: Package
  DistroRelease: Ubuntu 25.04
  Package: grub-efi-amd64 2.12-5ubuntu11
  ProcVersionSignature: Ubuntu 6.14.0-33.33-generic 6.14.11
  Uname: Linux 6.14.0-33-generic x86_64
  ApportVersion: 2.32.0-0ubuntu5.3
  Architecture: amd64
  CasperMD5CheckResult: pass
  Date: Tue Oct 21 19:13:10 2025
  ErrorMessage: installed grub-efi-amd64 package post-installation script subprocess returned error exit status 1
  InstallationDate: Installed on 2025-10-07 (14 days ago)
  InstallationMedia: Ubuntu 25.04 "Plucky Puffin" - Release amd64 (20250415.3)
  Python3Details: /usr/bin/python3.13, Python 3.13.3, python3-minimal, 3.13.3-1
  PythonDetails: N/A
  RebootRequiredPkgs: Error: path contained symlinks.
  RelatedPackageVersions:
   dpkg 1.22.18ubuntu2.2
   apt  3.0.0
  SourcePackage: grub2-unsigned
  Title: package grub-efi-amd64 2.12-5ubuntu11 failed to install/upgrade: installed grub-efi-amd64 package post-installation script subprocess returned error exit status 1
  UpgradeStatus: No upgrade log present (probably fresh install)

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