[Bug 1649126] [NEW] grub doesn't run and can't be reinstalled

[Luisa]

Public bug reported:

My Ubuntu was working regularly, but then when I restarted my computer from the windows partition, grub didn't appear on the starting screen and windows was automatically chosen to run. 
Then I tried to run Ubuntu from my BIOS menu for boots and it didn't allow me to run it as well. After that I tried to reinstall Ubuntu and almost in the end of the installation it showed an warning of FATAL ERROR regarding the impossibility of grub being installed. What happened? 
I'm about to format my HD and install only one OS (Ubuntu) and run windows as a virtual machine... I'm deeply upset about what happened :(

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubiquity 2.21.63.2
ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
Uname: Linux 4.4.0-31-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CasperVersion: 1.376
Date: Sun Dec 11 17:35:27 2016
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash ---
LiveMediaBuild: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
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)

** Affects: grub-installer (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug ubiquity-2.21.63.2 ubuntu xenial

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https://bugs.launchpad.net/bugs/1649126

Title:
  grub doesn't run and can't be reinstalled

Status in grub-installer package in Ubuntu:
  New

Bug description:
  My Ubuntu was working regularly, but then when I restarted my computer from the windows partition, grub didn't appear on the starting screen and windows was automatically chosen to run. 
  Then I tried to run Ubuntu from my BIOS menu for boots and it didn't allow me to run it as well. After that I tried to reinstall Ubuntu and almost in the end of the installation it showed an warning of FATAL ERROR regarding the impossibility of grub being installed. What happened? 
  I'm about to format my HD and install only one OS (Ubuntu) and run windows as a virtual machine... I'm deeply upset about what happened :(

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubiquity 2.21.63.2
  ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
  Uname: Linux 4.4.0-31-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  CasperVersion: 1.376
  Date: Sun Dec 11 17:35:27 2016
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash ---
  LiveMediaBuild: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
  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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