[Bug 1111950] Re: Ubiquity should be able to install both grub-pc and grub-efi when needed

[Phillip Susi]

ubiquity doesn't blindly create an esp when you boot it in uefi mode,
which is why grub-install needed modified to fall back to grub-pc, since
installing grub-efi would fail.  I suppose that if you boot in bios mode
and pick a side-by-side install on a disk that already has an efi system
partition then it could warn you.


** Changed in: ubiquity (Ubuntu)
   Importance: Undecided => Low

** Changed in: ubiquity (Ubuntu)
       Status: Invalid => Triaged

** Summary changed:

- Ubiquity should be able to install both grub-pc and grub-efi when needed
+ Ubiquity should warn when doing a side by side install in bios mode on an efi disk

** Description changed:

- In some situations, it would be useful if Ubiquity (the Ubuntu
- installer) could install both grub-pc and grub-efi at the same time:
- 
- 1) when the Ubuntu live disk is launched in Legacy mode, but there is an
- ESP on the disk.  (it can happen that the firmware is setup to boot the
- HDD in UEFI mode, but the live media in Legacy mode).
- 
- 2) when the Ubuntu live disk is launched in UEFI mode, but there is
- another OS (eg Windows installed in Legacy mode) with no ESP on the
- disk.  (it can happen that the firmware is setup to boot the HDD in
- Legacy mode, but the live media in UEFI mode).
- 
- Remarks:
- - from a live disk, it is impossible (AFAIK) to know in which mode the firmware is setup to boot the HDD.
- - of course, prior to perform this improvement of Ubiquity, we need to improve GRUB2 to allow grub-pc and grub-efi to be installed at the same time.
+ If you have an existing uefi install and attempt a side by side install,
+ but booted in bios mode, the installer should tell the user they need to
+ boot the installer in efi mode.

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https://bugs.launchpad.net/bugs/1111950

Title:
  Ubiquity should warn when doing a side by side install in bios mode on
  an efi disk

Status in “ubiquity” package in Ubuntu:
  Triaged

Bug description:
  If you have an existing uefi install and attempt a side by side
  install, but booted in bios mode, the installer should tell the user
  they need to boot the installer in efi mode.

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