[Bug 1366264] Re: wrong EFI partition modified

[Jay Michael]

The installed Ubuntu 14.04.1 is mounting /dev/sda1 as /boot/efi

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Title:
  wrong EFI partition modified

Status in “ubiquity” package in Ubuntu:
  New

Bug description:
       I installed Ubuntu to an external drive.  I told the installation
  to use the ESP partition on the external drive.  I think the
  installation erased the ESP partition on the external drive, and added
  itself to the ESP partition on the internal drive,  briefly
  supplanting Windows as the controller of EFI booting from that drive.

       My machine came with Windows 8.  I installed Ubuntu 14.04.1
  64-bit to an external USB Western Digital My Book.

       Before installing Ubuntu conventionally, I had experimented with
  creating an ESP on the WD drive -- 2 GB FAT16 partition named "vdos".
  In the root of that partition I had directories named "EFI" and
  "boot".  I had copied some version of grubx64.efi to
  ${vdos}/EFI/boot/bootx64.efi.  It was at the point where if I booted
  and broke into BIOS Setup/Boot Options, one of the UEFI BOOT options
  was the WD drive.  Choosing that option got me my grub menu.

       I burned ubuntu-14.04.1-desktop-amd64.iso to a DVD.  I booted the
  DVD in EFI mode (I can't swear I had Secure Boot enabled).  I
  installed Ubuntu, selecting "Something else".

       During the partitioning phase, I made sure that the "Install GRUB
  to" was set to "/dev/sdb" -- the external USB drive.  I filled in
  designated uses for the ESP partition and an existing swap partition.
  I created a new partition for the installation itself.  I do not
  believe that I checked the "Format Partition" box for any partition
  other than the new partition I created for the installation.

       When the installation completed and I rebooted, I had a GRUB menu
  with a few Ubuntu options, and an option for Windows Boot Manager.  I
  probably booted Ubuntu, if only because the timer ran out while I was
  taking notes.  When I rebooted and broke into BIOS, there was no
  Windows Boot Manager option in the BIOS BOOT Options.  I booted
  Windows by way of GRUB.  I shut down.  I rebooted and broke into BIOS
  Setup/Boot Options.  It said UEFI, Secure boot ON.  There was only one
  UEFI BOOT option, this time labeled Windows Boot Manager.

       (I don't remember when/if I toggled "Secure boot".  I think I had
  it enabled when I booted the DVD.  I think I would have left it
  enabled up to this point.)

       From my Live-USB I found that the ESP partition on the external
  drive was blank:  no name, no contents.  fdisk still reported it as
  having type "EF".  I didn't check the filesystem type.

       The ESP partition on the internal drive always had a top level
  directory "EFI".  "EFI" now has an "ubuntu" subdirectory containing
  grub.cfg, grubx64.efi, MokManager.efi, and shimx64.efi.  The grub.cfg
  "chains" to /boot/grub/grub.cfg on the Ubuntu installation (the Ubuntu
  installation is /dev/sdc6 when the thumb drive is plugged in).

       Copying ${wesp}/EFI/ubuntu/grubx64.efi to
  ${vdos}/efi/boot/bootx64.efi and ${wesp}/EFI/ubuntu/grub.cfg to
  ${vdos}/efi/ubuntu/grub.cfg results in BIOS showing a second UEFI Boot
  option.

       I started Windows both from the UEFI Boot option, and using the
  option in the GRUB menu, and I still have WD My Book as a BIOS UEFI
  Boot option.  This leads me to believe that it was not Windows that
  wiped out the ESP partition on the external drive

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubiquity (not installed)
  ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6
  Uname: Linux 3.13.0-35-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  Date: Fri Sep  5 23:55:54 2014
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash --
  InstallationDate: Installed on 2014-09-05 (1 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  ProcEnviron:
   LANGUAGE=en_US
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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