[Bug 1190937] Re: package grub-efi-amd64 1.99-21ubuntu3.9 failed to install/upgrade: ErrorMessage: subprocess installed post-installation script returned error exit status 127

[Oyibo]

Perfect! Solved my issue, many thanks for your help!

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https://bugs.launchpad.net/bugs/1190937

Title:
  package grub-efi-amd64 1.99-21ubuntu3.9 failed to install/upgrade:
  ErrorMessage: subprocess installed post-installation script returned
  error exit status 127

Status in “grub2” package in Ubuntu:
  Incomplete

Bug description:
  Been an error I've had for a while now, UEFI dual-booting Windows 8
  and Ubuntu 12.04 but trying to upgrade.

  ProblemType: Package
  DistroRelease: Ubuntu 12.04
  Package: grub-efi-amd64 1.99-21ubuntu3.9
  ProcVersionSignature: Ubuntu 3.5.0-30.51~precise1-generic 3.5.7.9
  Uname: Linux 3.5.0-30-generic x86_64
  ApportVersion: 2.0.1-0ubuntu17.3
  Architecture: amd64
  Date: Fri Jun 14 11:34:40 2013
  ErrorMessage: ErrorMessage: subprocess installed post-installation script returned error exit status 127
  InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130213)
  InvalidGrubScript: /etc/grub.d/25_custom
  MarkForUpload: True
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-30-generic root=UUID=5cdfee53-d211-47a3-a521-28f9ebe2bb09 ro quiet splash vt.handoff=7
  SourcePackage: grub2
  Title: package grub-efi-amd64 1.99-21ubuntu3.9 failed to install/upgrade: ErrorMessage: subprocess installed post-installation script returned error exit status 127
  UpgradeStatus: No upgrade log present (probably fresh install)

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