Public bug reported:
in order to fix this problem i did:
apt-get purge grub\*
apt-get install grub-efi
apt-get autoremove
update-grub
and before that in order to boot the system i had to manually install grub from
a live-usb:
mount /dev/sda2 /mnt
grub-install /dev/sda --root-directory=/mnt
the installed seems to mess up if your computer does efi boot but not
secure boot.
ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: grub-efi-amd64-signed (not installed)
ProcVersionSignature: Ubuntu 4.8.0-58.63~16.04.1-generic 4.8.17
Uname: Linux 4.8.0-58-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.6
Architecture: amd64
Date: Tue Jul 4 19:11:29 2017
DuplicateSignature:
package:grub-efi-amd64-signed:(not installed)
Setting up grub-efi-amd64-signed (1.66.11+2.02~beta2-36ubuntu3.11) ...
grub-install: error: /usr/lib/grub/i386-pc/modinfo.sh doesn't exist. Please
specify --target or --directory.
dpkg: error processing package grub-efi-amd64-signed (--configure):
subprocess installed post-installation script returned error exit status 1
ErrorMessage: subprocess installed post-installation script returned error exit
status 1
InstallationDate: Installed on 2017-07-04 (0 days ago)
InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64
(20170215.2)
RelatedPackageVersions:
dpkg 1.18.4ubuntu1.2
apt 1.2.20
SourcePackage: grub2-signed
Title: package grub-efi-amd64-signed (not installed) failed to install/upgrade:
subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: grub2-signed (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-package need-duplicate-check xenial
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https://bugs.launchpad.net/bugs/1702335
Title:
package grub-efi-amd64-signed (not installed) failed to
install/upgrade: subprocess installed post-installation script
returned error exit status 1
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