[Bug 1418706] Re: Vivid: UEFI: blank drive incorrectly detected as existing BIOS-mode install

[Phillip Susi]

Strange... the message itself comes from the underlying d-i component
partman-efi.  The logic it uses to present the message is "are there no
EFI system partitions, but there are any other existing partitions".  I
wonder... there was some other flawed partition logic like this that was
triggering on the installation media itself, so I wonder if that is what
is going on here.  In other words, the blank disk isn't what is
triggering the message at all, but rather the fact that it is seeing a
partition on the usb flash stick you are installing from.

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https://bugs.launchpad.net/bugs/1418706

Title:
  Vivid: UEFI: blank drive incorrectly detected as existing BIOS-mode
  install

Status in ubiquity package in Ubuntu:
  New

Bug description:
  When doing a UEFI-mode install using the latest daily Vivid ISO (Thu
  Feb 5), Ubiquity incorrectly concludes that a blank drive contains an
  existing BIOS-mode install (see error in attached screenshot).

  The resulting error dialog is also broken: none of the buttons do any
  thing when clicked: X (close button), "Go Back", "Continue".

  You can seemingly move the install forward by clicking "Continue" in
  the main installer window, but things are still broken somewhere as
  grub isn't getting correctly installed (system is unbootable after the
  install completes).

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