[Bug 1050940] Re: Ubiquity fails creating a correct Windows dualboot on EFI computers (grub-pc <-> grub-efi)

[YannUbuntu]

** Description changed:

  Currently, Ubiquity sometimes fails creating a correct Windows dualboot when:
  - either it installs Ubuntu in EFI mode when Windows is installed in Legacy mode ( examples: Bug #908109 , Bug #959446 ,
  http://ubuntuforums.org/showthread.php?p=12238420#post12238420 )
- - or it installs Ubuntu in Legacy (not-EFI) mode when Windows is installed in EFI mode. ( example where Windows was installed in both EFI and Legacy modes: http://ubuntuforums.org/showpost.php?p=12246811&postcount=6 )
+ - or it installs Ubuntu in Legacy (not-EFI) mode when Windows is installed in EFI mode. ( example: http://ubuntuforums.org/showpost.php?p=12246811&postcount=6 )
  
  In order to create a correct dualboot, Ubiquity should always install
  Ubuntu in the same mode as Windows.
  
  I think the deep problem is that Ubiquity only looks at dmesg | grep EFI to determine if it is going to install in EFI mode or not. AFAIK, dmesg only indicates the mode in which the BIOS boots the live media, NOT the mode in which the BIOS boots the HDD.
  Remark: currently Ubuntu32bit is not EFI compatible (see Bug #1025555 ), so Ubiquity32bit will always install in Legacy mode (which allowed the OP of Bug #908109 to workaround the current bug).
  
  (this problem is more and more frequent as new computers generally come
  with EFI firmware)
  
  *************** WORKAROUND: using Boot-Repair to convert Ubuntu in the same mode as Windows.
  See https://help.ubuntu.com/community/UEFI

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to ubiquity in Ubuntu.
https://bugs.launchpad.net/bugs/1050940

Title:
  Ubiquity fails creating a correct Windows dualboot on EFI computers
  (grub-pc <-> grub-efi)

Status in “ubiquity” package in Ubuntu:
  Confirmed

Bug description:
  Currently, Ubiquity sometimes fails creating a correct Windows dualboot when:
  - either it installs Ubuntu in EFI mode when Windows is installed in Legacy mode ( examples: Bug #908109 , Bug #959446 ,
  http://ubuntuforums.org/showthread.php?p=12238420#post12238420 )
  - or it installs Ubuntu in Legacy (not-EFI) mode when Windows is installed in EFI mode. ( example: http://ubuntuforums.org/showpost.php?p=12246811&postcount=6 )

  In order to create a correct dualboot, Ubiquity should always install
  Ubuntu in the same mode as Windows.

  I think the deep problem is that Ubiquity only looks at dmesg | grep EFI to determine if it is going to install in EFI mode or not. AFAIK, dmesg only indicates the mode in which the BIOS boots the live media, NOT the mode in which the BIOS boots the HDD.
  Remark: currently Ubuntu32bit is not EFI compatible (see Bug #1025555 ), so Ubiquity32bit will always install in Legacy mode (which allowed the OP of Bug #908109 to workaround the current bug).

  (this problem is more and more frequent as new computers generally
  come with EFI firmware)

  *************** WORKAROUND: using Boot-Repair to convert Ubuntu in the same mode as Windows.
  See https://help.ubuntu.com/community/UEFI

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1050940/+subscriptions