[Bug 1607032] Re: package grub-efi-amd64-signed 1.34.13+2.02~beta2-9ubuntu1.11 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Apport retracing service]

** Tags removed: need-duplicate-check

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Title:
  package grub-efi-amd64-signed 1.34.13+2.02~beta2-9ubuntu1.11 failed to
  install/upgrade: subprocess installed post-installation script
  returned error exit status 1

Status in grub2-signed package in Ubuntu:
  New

Bug description:
  I hope this helps. My desktop PC has 2 HDs. The 1st (primary)
  installed with 16.04 .The 2nd installed with  14.04.

  Up until last week I was selecting 16.04 on boot up.and using the 2 HD
  as a backup

  After an update I am unable to boot into 16.04

  The follow dialogue appears along the top of the screen

  /dev/sdb1:527762/60792832 files,9282817/243146240 Blocks

  Now when I boot into 14.04, 16.04 loaded HD appears as an extension

  ProblemType: Package
  DistroRelease: Ubuntu 14.04
  Package: grub-efi-amd64-signed 1.34.13+2.02~beta2-9ubuntu1.11
  ProcVersionSignature: Ubuntu 3.13.0-88.135-generic 3.13.11-ckt39
  Uname: Linux 3.13.0-88-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.21
  Architecture: amd64
  Date: Wed Jul 27 21:26:09 2016
  DuplicateSignature: package:grub-efi-amd64-signed:1.34.13+2.02~beta2-9ubuntu1.11:subprocess installed post-installation script returned error exit status 1
  ErrorMessage: subprocess installed post-installation script returned error exit status 1
  InstallationDate: Installed on 2014-12-31 (574 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  RelatedPackageVersions:
   dpkg 1.17.5ubuntu5.7
   apt  1.0.1ubuntu2.14
  SourcePackage: grub2-signed
  Title: package grub-efi-amd64-signed 1.34.13+2.02~beta2-9ubuntu1.11 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
  UpgradeStatus: No upgrade log present (probably fresh install)

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