[Bug 1767259] Re: ubuntu 18.04 The 'grub-efi-amd64-signed' package failed to install into / targer.

[Ken Hughes]

*** This bug is a duplicate of bug 1767703 ***
    https://bugs.launchpad.net/bugs/1767703

I was able to successfully install after writing the 18.04.2 ISO file to
the raw USB drive.  After booting into the Live environment, gdisk
report that the partition table is an invalid GPT:

root at ubuntu:~# gdisk -l /dev/sda
GPT fdisk (gdisk) version 1.0.3

Partition table scan:
  MBR: MBR only
  BSD: not present
  APM: not present
  GPT: not present


***************************************************************
Found invalid GPT and valid MBR; converting MBR to GPT format
in memory. 
***************************************************************

Disk /dev/sda: 30949376 sectors, 14.8 GiB
Model: MKNUFDVT16GB    
Sector size (logical/physical): 512/512 bytes
Disk identifier (GUID): E7796633-0224-47BE-98DE-9174127D174C
Partition table holds up to 128 entries
Main partition table begins at sector 2 and ends at sector 33
First usable sector is 34, last usable sector is 30949342
Partitions will be aligned on 4-sector boundaries
Total free space is 30944381 sectors (14.8 GiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   2         3830956         3835883   2.4 MiB     EF00  EFI System
root at ubuntu:~$

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https://bugs.launchpad.net/bugs/1767259

Title:
  ubuntu 18.04 The 'grub-efi-amd64-signed' package failed to install
  into / targer.

Status in grub-installer package in Ubuntu:
  Confirmed

Bug description:
  ubuntu 18.04 The 'grub-efi-amd64-signed' package failed to install
  into / targer.

  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
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Apr 27 08:31:02 2018
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash ---
  LiveMediaBuild: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
  ProcEnviron:
   LANGUAGE=en_US.UTF-8
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   LC_NUMERIC=C.UTF-8
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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