[Bug 1688389] Re: package grub-efi-amd64-signed 1.80+2.02~beta3-4ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Apport retracing service]

*** This bug is a duplicate of bug 1683563 ***
    https://bugs.launchpad.net/bugs/1683563

Thank you for taking the time to report this crash and helping to make
this software better.  This particular crash has already been reported
and is a duplicate of bug #1683563, so is being marked as such.  Please
look at the other bug report to see if there is any missing information
that you can provide, or to see if there is a workaround for the bug.
Additionally, any further discussion regarding the bug should occur in
the other report.  Please continue to report any other bugs you may
find.

** Tags removed: need-duplicate-check

** This bug has been marked a duplicate of bug 1683563
   package grub-efi-amd64-signed 1.80+2.02~beta3-4ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

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https://bugs.launchpad.net/bugs/1688389

Title:
  package grub-efi-amd64-signed 1.80+2.02~beta3-4ubuntu2 failed to
  install/upgrade: subprocess installed post-installation script
  returned error exit status 1

Status in grub2-signed package in Ubuntu:
  New

Bug description:
  system is dual boot using windows boot manager and neogrub.  Many error messages on updating but I can't detect any real issues.
  I manually update menu.lst in the \NST folder to reflect the current system

  ProblemType: Package
  DistroRelease: Ubuntu 17.04
  Package: grub-efi-amd64-signed 1.80+2.02~beta3-4ubuntu2
  ProcVersionSignature: Ubuntu 4.10.0-19.21-generic 4.10.8
  Uname: Linux 4.10.0-19-generic x86_64
  ApportVersion: 2.20.4-0ubuntu4
  Architecture: amd64
  Date: Thu May  4 12:31:02 2017
  DuplicateSignature:
   package:grub-efi-amd64-signed:1.80+2.02~beta3-4ubuntu2
   Installing for x86_64-efi platform.
   grub-install: error: cannot find EFI directory.
   dpkg: error processing package shim-signed (--configure):
    subprocess installed post-installation script returned error exit status 1
  ErrorMessage: subprocess installed post-installation script returned error exit status 1
  RelatedPackageVersions:
   dpkg 1.18.10ubuntu2
   apt  1.4
  SourcePackage: grub2-signed
  Title: package grub-efi-amd64-signed 1.80+2.02~beta3-4ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
  UpgradeStatus: Upgraded to zesty on 2017-04-13 (21 days ago)

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