[Bug 1805168] [NEW] grub-installer failed during a re-install of bionic beaver 18.04

[Quentin Pascal]

Public bug reported:

After a first installation in dualboot with Windows10 and two weeks of
Linux use and some updates, I lost grub-menu and Ubuntu18.04 refused to
start even from the uefi entry in the bios boot menu. So I tried to
reinstall the root partition (ext4, formatted, 21 Gb), keeping "/Home"
partition. Finally grub installation missed.


Description:	Ubuntu 18.04.1 LTS
Release:	18.04
Linux ubuntu 4.15.0-29-generic

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubiquity 18.04.14.6 [modified: lib/partman/automatically_partition/question]
ProcVersionSignature: Ubuntu 4.15.0-29.31-generic 4.15.18
Uname: Linux 4.15.0-29-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
CasperVersion: 1.394
Date: Mon Nov 26 15:50:20 2018
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash ---
LiveMediaBuild: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
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-18.04.14.6 ubuntu

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https://bugs.launchpad.net/bugs/1805168

Title:
  grub-installer failed during a re-install of bionic beaver 18.04

Status in grub-installer package in Ubuntu:
  New

Bug description:
  After a first installation in dualboot with Windows10 and two weeks of
  Linux use and some updates, I lost grub-menu and Ubuntu18.04 refused
  to start even from the uefi entry in the bios boot menu. So I tried to
  reinstall the root partition (ext4, formatted, 21 Gb), keeping "/Home"
  partition. Finally grub installation missed.

  
  Description:	Ubuntu 18.04.1 LTS
  Release:	18.04
  Linux ubuntu 4.15.0-29-generic

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubiquity 18.04.14.6 [modified: lib/partman/automatically_partition/question]
  ProcVersionSignature: Ubuntu 4.15.0-29.31-generic 4.15.18
  Uname: Linux 4.15.0-29-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.2
  Architecture: amd64
  CasperVersion: 1.394
  Date: Mon Nov 26 15:50:20 2018
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash ---
  LiveMediaBuild: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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