[Bug 1396379] Re: installer uses first EFI system partition found even when directed otherwise

[Jonathan Amir]

I can't believe that you are downplaying the severity of this, arguing
about what clobber means, and going (again) into the technical details
of how grub works.

It is the user experience that matters, not the technical details.
Please think about the non-technical end-users. For them, their machine
is bricked. They might not even know that they can boot the machine with
the usb drive in it. Even if they knew, this is not an acceptable
proposition.

Even if the technical help is available for them, in the form of a
friend, a colleague, a local repair lab or even a google search, how
many hours or days, work-time and money will they lose before their
machine is back to normal?
(https://bugs.launchpad.net/ubuntu/+source/grub-efi-
amd64-signed/+bug/1396379/comments/41)

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https://bugs.launchpad.net/bugs/1396379

Title:
  installer uses first EFI system partition found even when directed
  otherwise

Status in grub-efi-amd64-signed package in Ubuntu:
  Confirmed
Status in ubiquity package in Ubuntu:
  Confirmed

Bug description:
  (k)ubuntu 14.04.1
  package version: 2.02~beta2-9ubuntu1

  i installed ubuntu on my external hard disk, where i also have a previously installed fedora system. i also have a windows
  (efi-booted) system in the internal hard disk.

  at install time via ubiquity i get all grub configuration files in the first EFI-labelled partition (i.e. /dev/sda2 in my case) instead of the one i selected (/dev/sdb1).
  later i changed my fstab mounting /boot/efi on /dev/sdb1 and tried to reinstall grub package (apt-get install --reinstall grub-efi-amd64); now all grub configuration files are in the rigt place, but booting from the external hard disk still shows the fedora grub installation, while selectin the internal hard disk from the bios menu shows a submenu listing ubuntu and windows.
  explicitly installing grub in the correct disk (grub-install /dev/sdb; grub-mkconfig -o /boot/efi/EFI/ubuntu/grub.cfg) has no effect, nor it has running efibootmgr (efibootmgr -c --disk /dev/sdb --part 1).

  expected results: grub shoud have been installed in the disk/partition i chose;
  actual results: ubuntu always chooses the first disk to install grub on.

  Note that this is not just about the dummy grub install location
  selector that is not used in EFI mode, but configuring one partition
  as do not use, and the other as ESP in the manual partitioning screen.

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