[Bug 1668148] Re: Booting installer in EFI mode with existing bios mode hd crashes

[Mathieu Trudel-Lapierre]

I believe we've addressed the crashes in installer with this bug:
https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1803031

This reverts part of the original changes, to catch cases where an ESP
isn't present and the system in booting in UEFI mode: rather than
crashing, there will be a clear warning presented to change the
partitioning scheme used (to add an ESP partition).

If you absolutely don't want to do that, then the solution will be to
boot in BIOS mode, where such a requirement doesn't exist (ie. if you
boot in BIOS mode Ubuntu will install in BIOS mode; if you boot in UEFI
mode, Ubuntu will install in UEFI mode; and if you install in UEFI mode,
you should boot to disk in UEFI mode -- that's typically where things
will break; people might be forced into booting in a specific mode for
disk, and a different mode for USB / DVD).

If you are having issues with booting in the right mode for what you
want; you might want to check forums/ doc for your particular BIOS, some
have their own little quirks we might not know about.

In other words, I think we're handling this properly now, by forcing the
creation of an ESP when you do the partitioning rather than crashing at
the end of the install and not letting you know why things went badly.

** Changed in: partman-efi (Ubuntu)
       Status: Triaged => Fix Released

** Changed in: partman-efi (Ubuntu Artful)
       Status: Triaged => Won't Fix

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https://bugs.launchpad.net/bugs/1668148

Title:
  Booting installer in EFI mode with existing bios mode hd crashes

Status in partman-efi package in Ubuntu:
  Fix Released
Status in partman-efi source package in Artful:
  Won't Fix

Bug description:
  When installing in EFI mode to a disk that is partitioned without an
  EFI system partition, you do get a warning message that this may cause
  a problem and suggests that you go back and do a bios mode install
  instead.  The way that it is worded, and the fact that the button to
  switch to a BIOS mode install is labeled "cancel", is very confusing
  and has lead to hundreds, if not thousands of users clicking the OK
  button instead, and proceeding with an install that is doomed to fail.
  This message really needs to be clarified.

  Instead of clarifying, the question was removed, and grub-efi is
  always used, which crashes the install.  grub-pc is the correct
  version to use in this case.  This is a release regression that needs
  corrected for 18.04.1.

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