[Bug 1767636] [NEW] error "`grub-efi-amd64-signed` package failed to install into / target/" while installing ubuntu on computer where windows 10 exists in UEFI mode.

[Raghav Mittal]

Public bug reported:

I have windows 10 installation on UEFI mode in other partition. I
recently removed Ubuntu 16.04 partition to do a fresh installation of
Ubuntu 18.04. But when I install it through bootable USB, I get the
error during grub-2 installation process.

"`grub-efi-amd64-signed` package failed to install into / target/"

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: Sun Apr 29 09:00:23 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

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https://bugs.launchpad.net/bugs/1767636

Title:
  error "`grub-efi-amd64-signed` package failed to install into /
  target/" while installing ubuntu on computer where windows 10 exists
  in UEFI mode.

Status in grub-installer package in Ubuntu:
  New

Bug description:
  I have windows 10 installation on UEFI mode in other partition. I
  recently removed Ubuntu 16.04 partition to do a fresh installation of
  Ubuntu 18.04. But when I install it through bootable USB, I get the
  error during grub-2 installation process.

  "`grub-efi-amd64-signed` package failed to install into / target/"

  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: Sun Apr 29 09:00:23 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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