[Bug 1015211] Re: Ubiquity installed grub-efi when it should have installed grub-pc

[martinr]

Conclusion
When the Live CD is booted with an UEFI boot sequence, Grub erroneously expects a GPT structured HD, even if the boot HD is msdos/MBR structured. Grub doesn't installs itself to the MBR. When the same Live CD is booted with a non UEFI boot sequence Grub is automatically installed correctly in the MBR and Win7 is added too.

Discussion
Because more and more computers support UEFI nowadays, the out of the box installation of Grub and hence Ubuntu from the Live CD is expected to fail more often. I would suggest that the installation process should be updated to alert the user of a UEFI boot sequence conflicting with a non GPT structured target installation HD or better yet, if possible automatically make the correct Grub installation selection accordingly to the installation target HD's structure.

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Title:
  Ubiquity installed grub-efi when it should have installed grub-pc

Status in “ubiquity” package in Ubuntu:
  Confirmed

Bug description:
  Goal:
  Create a dual boot system with a pre installed Win7x64 and Ubuntu Desktop 12.04 LTS amd64 with Grub installed as the boot-loader in the MBR of sda.

  Problem symptoms:
  After Ubuntu installation from the Live CD along side Win7x64, Grub wont start at boot-up of the system. It boots straight into Win7.

  Hypothesis:
  The Ubuntu Desktop 12.04 amd64 Live CD, was booted with an UEFI boot sequence although the hard disk structure is MSDOS with MBR. This fools ubuquity into installing Grub in EFI mode and does not install grub-pc into the MBR.

  For full information please view:
  http://ubuntuforums.org/showthread.php?p=12030957#post12030957

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