[Bug 1462676] Re: grub fails to install. x86_64-efi system Windows 8.1 primary

[d3bug]

Actually, it's not corrupt.  I discovered the problem.   Apparently grub
will not install to the MBR of an EFI system.  I discovered this purely
by accident as I found this information absolutely nowhere.  It will
however install to the Windows EFI partition.  So I solved my own
problem.  Someone might want to update the installer so that if it is
running in EFI, it should automatically choose the existing EFI
partition to install to as default instead of the MBR of the HDD (which
will always fail).

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https://bugs.launchpad.net/bugs/1462676

Title:
  grub fails to install.  x86_64-efi system  Windows 8.1 primary

Status in grub-installer package in Ubuntu:
  Invalid

Bug description:
  Ubuntu 15.04 x86_64

  Windows 8.1 is my primary OS.  I tried to install Ubuntu along side
  Windows.  I created 2 partitions (swap and / [ext4]).  Install goes
  flawlessly till it gets to grub.  Grub tries to install and fails.  No
  error #, etc.  The system is a DELL  with: AMD A10-5745M APU with
  Radeon(tm) HD Graphics (Gallium 0.4 on AMD ARUBA).

  DELL Model #: Inspiron M731R (5735, Late 2013)
  RAM: 8gb (6.9 usable)

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: ubiquity 2.21.25
  ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
  Uname: Linux 3.19.0-15-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
  CasperVersion: 1.360
  Date: Sat Jun  6 16:22:32 2015
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed cdrom-detect/try-usb=true noprompt floppy.allowed_drive_mask=0 ignore_uuid boot=casper quiet splash ---
  LiveMediaBuild: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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