Comment 3 for bug 1696307

reason may be - or comes together whith - that the installation-program
crashed when I made the fresh install of this ubuntu version from usb.
During installation i chose efi option with info displayed that not
other remaining os on the computer can be started then, which was ok
for me. As I understood the installation wasn't able then to update the
bootmanager for this option and displayed message that the system won't
start. I was glad it does even though - but don't have an idea what is
needed to get the system properly set up.

-------- Weitergeleitete Nachricht --------

Datum: Wed, 07 Jun 2017 17:42:08 -0000
Betreff: [Bug 1696307] Re: package shim-signed
1.28+0.9+1474479173.6c180c6-1ubuntu1 failed to install/upgrade:
Unterprozess installiertes post-installation-Skript gab den Fehlerwert
1 zurück
An: <email address hidden>
Von: Steve Langasek <email address hidden>
The error in your log is:

shim-signed (1.28+0.9+1474479173.6c180c6-1ubuntu1) wird eingerichtet
...
x86_64-efi wird für Ihre Plattform installiert.
grub-install: Fehler: EFI-Verzeichnis kann nicht gefunden werden.
dpkg: Fehler beim Bearbeiten des Paketes shim-signed (--configure):
 Unterprozess installiertes post-installation-Skript gab den Fehlerwert
1 zurück

But your bug report also shows that your system does not have EFI
support enabled.  Do you know why the EFI version of grub is installed
if your system is not booted using EFI?

** Changed in: shim-signed (Ubuntu)
       Status: New => Incomplete