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

[martinr]

Steve Langasek (vorlon) wrote on 2013-01-15: 
>  The current on-disk layout tells you even *less* about how
> the disk will be booted than the current boot method for the removable media
> tells you.

Dear Steve, if the goal is:
Create a dual boot system on top of a pre installed Win7x64.

Why would the on-disk layout not tell you anything about how Win7x64 is currently installed an how it can be booted?
The system gets its operating system from the disk and obviously contains the only source of the bootable Win7x64 software.

You should not make any assumptions about which boot sequence will be used to boot the disk, because that is the real unknown here. (Assumptions are the mother of all f*ck-ups. :)
If you don't know and can't find out, just let the user decide / overwrite.

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https://bugs.launchpad.net/bugs/1015211

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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