[Bug 1495450] Re: installaion 14.04.3 on external drive

[Bougron]

i have decided to erase ubuntu 15.04 on partition sb9 by ubuntu 14.04.3 with option
'autre chose' and without demouting the sdb and formating sdb9

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https://bugs.launchpad.net/bugs/1495450

Title:
  installaion 14.04.3 on external drive

Status in grub-installer package in Ubuntu:
  New

Bug description:
  while installing
   "Le paquet grub-efi-amd-signed n'a pas pas pu être mandaté dans /target.
  En l'absence du programme du démarrage de grub, le système installé ne pourra pas démarré"

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubiquity 2.18.8.9
  ProcVersionSignature: Ubuntu 3.19.0-25.26~14.04.1-generic 3.19.8-ckt2
  Uname: Linux 3.19.0-25-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.11
  Architecture: amd64
  CasperVersion: 1.340.2
  Date: Mon Sep 14 12:14:17 2015
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash --
  LiveMediaBuild: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
  ProcEnviron:
   LANGUAGE=fr_FR.UTF-8
   PATH=(custom, no user)
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  SourcePackage: grub-installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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