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

[shanmugam]

I just boot the system using grub, once i logged in, the system prompted me with this error messages.

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
AptOrdering:
 grub-efi-amd64-bin:amd64: Install
 grub-efi-amd64:amd64: Install
 grub-efi-amd64-signed:amd64: Install
 NULL: ConfigurePending
Architecture: amd64
Date: Fri Apr 14 19:11:38 2017
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: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Tim Passingham (tim-8aw3u04umo)]

I was upgrading from 16.10 to 17.04 and got this error.

I did a boot repair and all is now well. I believe the problem was that the efi partition was not mounted. I don't know why - I've not changed anything since 16.10.

[Tim Passingham (tim-8aw3u04umo)]

On a laptop running xubuntu I upgraded from 16.10 to 17.04 with no problem, and the /boot/efi wasn't mounted, so it's a bit of a puzzle.

[dino99 (9d9)]

That version is now dead
http://news.softpedia.com/news/ubuntu-17-04-zesty-zapus-has-reached-end-of-life-upgrade-to-ubuntu-17-10-now-519360.shtml