[Bug 1763783] Re: Upgrading 17.10 to 18.04, no disk format

[Phillip Susi]

Your disk is currently partitioned to boot in bios mode, but you booted
the installer in EFI mode. A warning message prompted you that this
could be a problem and recommended performing a bios mode install
instead, but you chose not to. You either need to perform the bios mode
install, or partition the disk using GPT and set up an EFI system
partition to install in EFI mode. This will be done for you if you
choose the "use entire disk" guided install option.

** Changed in: grub-installer (Ubuntu)
       Status: New => Invalid

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Title:
  Upgrading 17.10 to 18.04, no disk format

Status in grub-installer package in Ubuntu:
  Invalid

Bug description:
  Tried to upgrade a 17.04 to 18.04 beta 2, without wiping system.  I
  removed all directories on the SSD except home before the install.

  Just error aborted on "grub-efi-amd64-signed failed to install"

  SSD is formatted as 3 partitions, bios/swap/root

  
  # fdisk -l /dev/sda
  Disk /dev/sda: 477 GiB, 512110190592 bytes, 1000215216 sectors
  Units: sectors of 1 * 512 = 512 bytes
  Sector size (logical/physical): 512 bytes / 512 bytes
  I/O size (minimum/optimal): 512 bytes / 512 bytes
  Disklabel type: gpt
  Disk identifier: 7E8873B9-CD45-408B-8D2F-C46053AB715B

  Device       Start        End   Sectors   Size Type
  /dev/sda1     2048       4095      2048     1M BIOS boot
  /dev/sda2     4096    4225023   4220928     2G Linux swap
  /dev/sda3  4225024 1000215182 995990159 474.9G Linux filesystem

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubiquity 18.04.4 [modified: lib/partman/automatically_partition/question]
  ProcVersionSignature: Ubuntu 4.15.0-13.14-generic 4.15.10
  Uname: Linux 4.15.0-13-generic x86_64
  ApportVersion: 2.20.9-0ubuntu2
  Architecture: amd64
  CasperVersion: 1.392
  Date: Fri Apr 13 10:08:02 2018
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu-mate.seed boot=casper quiet splash ---
  LiveMediaBuild: Ubuntu-MATE 18.04 LTS "Bionic Beaver" - Beta amd64 (20180404)
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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