[Bug 1574446] Re: installation to coexist with 12.04 failed - grub-efi-amd64-signed pkg did not install

[Phillip Susi]

The option is given because you can choose to continue in EFI mode, and
go ahead and create an EFI system partition, and then successfully
install in EFI mode.

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https://bugs.launchpad.net/bugs/1574446

Title:
  installation to coexist with 12.04 failed - grub-efi-amd64-signed pkg
  did not install

Status in grub-installer package in Ubuntu:
  Invalid

Bug description:
  "grub-efi-amd64-signed package failed to install into /target/.
  Without the GRUB boot loader, the installed system will not boot."

  followed by 'installer crashed'

  Installing next to a 12.04 installation that had individual partitions
  for /home, /var, /usr, /bin, etc. Resized to put 16.04 all on one
  partition. That may have something to do with the failure.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubiquity 2.21.63 [modified: lib/partman/automatically_partition/question]
  ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
  Uname: Linux 4.4.0-21-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  CasperVersion: 1.376
  Date: Sun Apr 24 09:22:17 2016
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash ---
  LiveMediaBuild: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  ProcEnviron:
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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