[Bug 1706765] [NEW] on dual booting with windows 10 GRUB installation fails.. ! don't know why

[Anand Thakkar]

Public bug reported:

I have windows 10- installed on my laptop, I want to dual boot it with
ubuntu 16.04 LTS, I tried several times installing it but everytime
after system installations, when it is time to install grub it always
shows this error I don't know what should I do.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubiquity 2.21.63.2 [modified: lib/partman/automatically_partition/question]
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: Thu Jul 27 12:46:57 2017
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash ---
LiveMediaBuild: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
ProcEnviron:
 LANGUAGE=en_IN
 PATH=(custom, no user)
 LANG=en_IN
 SHELL=/bin/bash
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/1706765

Title:
  on dual booting with windows 10 GRUB installation fails.. ! don't know
  why

Status in grub-installer package in Ubuntu:
  New

Bug description:
  I have windows 10- installed on my laptop, I want to dual boot it with
  ubuntu 16.04 LTS, I tried several times installing it but everytime
  after system installations, when it is time to install grub it always
  shows this error I don't know what should I do.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubiquity 2.21.63.2 [modified: lib/partman/automatically_partition/question]
  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: Thu Jul 27 12:46:57 2017
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash ---
  LiveMediaBuild: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
  ProcEnviron:
   LANGUAGE=en_IN
   PATH=(custom, no user)
   LANG=en_IN
   SHELL=/bin/bash
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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