[Bug 1775657] [NEW] The 'grub-efi-amd64-signed' package failed to install

[DynV]

Public bug reported:

On an almost 300 Gb HDD, the 1st ~230 Gb was non-*nix and the rest were
old *nixes. I booted on Ubuntu 18.04 LTS non-installing to partition the
drive, deleting the *nixes, stretching the non-*nix (keeping the
beginning to 0). I tried installing (18.04 LTS) which required me to do
steps with the free/unallocated space (I was hoping the installer would
use that and make all the steps on it), so I made the swap 2 X RAM
(size) then made the remaining ~35 Gb ext4 / (root) and the "Format?"
checkbox was present for the only ext4 row/partition. It failed giving
me the error which beginning is this bug summary which full content is
in the attached screenshot.

On the same setting, not having rebooted (thus booted on Ubuntu 18.04
LTS non-installing on the system which main drive is the almost 300 Gb
HDD), I tried installing again, using the top-left icon labelled
"Install Ubuntu 18.04 LTS" and kept the previous options up to the 5th,
of 7, option, labelled "Installation type", in which I chose the 1st
option Reinstall Ubuntu 18.04 LTS with description "Documents... will be
kept. Installed software will be kept where possible. System-wide
settings will be cleared." which ended up with the same or quite similar
error.

I'll soon restart the system, hopefully it'll be able to boot on the
previous non-*nix I worked on > 99% time (on that system).

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubiquity 18.04.14
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
CasperVersion: 1.394
Date: Thu Jun  7 12:02:52 2018
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash ---
LiveMediaBuild: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: grub-installer (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug bionic ubiquity-18.04.14 ubuntu

** Attachment added: "error window starting with the bug summary"
   https://bugs.launchpad.net/bugs/1775657/+attachment/5149844/+files/Screenshot%20from%202018-06-07%2011-42-06.png

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https://bugs.launchpad.net/bugs/1775657

Title:
  The 'grub-efi-amd64-signed' package failed to install

Status in grub-installer package in Ubuntu:
  New

Bug description:
  On an almost 300 Gb HDD, the 1st ~230 Gb was non-*nix and the rest
  were old *nixes. I booted on Ubuntu 18.04 LTS non-installing to
  partition the drive, deleting the *nixes, stretching the non-*nix
  (keeping the beginning to 0). I tried installing (18.04 LTS) which
  required me to do steps with the free/unallocated space (I was hoping
  the installer would use that and make all the steps on it), so I made
  the swap 2 X RAM (size) then made the remaining ~35 Gb ext4 / (root)
  and the "Format?" checkbox was present for the only ext4
  row/partition. It failed giving me the error which beginning is this
  bug summary which full content is in the attached screenshot.

  On the same setting, not having rebooted (thus booted on Ubuntu 18.04
  LTS non-installing on the system which main drive is the almost 300 Gb
  HDD), I tried installing again, using the top-left icon labelled
  "Install Ubuntu 18.04 LTS" and kept the previous options up to the
  5th, of 7, option, labelled "Installation type", in which I chose the
  1st option Reinstall Ubuntu 18.04 LTS with description "Documents...
  will be kept. Installed software will be kept where possible. System-
  wide settings will be cleared." which ended up with the same or quite
  similar error.

  I'll soon restart the system, hopefully it'll be able to boot on the
  previous non-*nix I worked on > 99% time (on that system).

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubiquity 18.04.14
  ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
  Uname: Linux 4.15.0-20-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7
  Architecture: amd64
  CasperVersion: 1.394
  Date: Thu Jun  7 12:02:52 2018
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash ---
  LiveMediaBuild: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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