Grub2 doesnt drivemap windows entries booting from second disk

Bug #1099127 reported by Robert Baranyai on 2013-01-13
14
This bug affects 3 people
Affects Status Importance Assigned to Milestone
grub2 (Ubuntu)
High
Unassigned

Bug Description

Grub 2 can no longer boot Windows 7 after upgrade from Ubuntu 12.04 to 12.10. The machine has two physical SATA HDDs, both configured with single partition. Disk one (sdb1) runs Ubuntu 12.10 and disk two (sdc1) runs Windows7. Disk sda1 is an IDE Zip drive. Both operating systems boot independently when boot priority is changed in the system BIOS. Windows remaind visible in the Grub2 menu after the Ubuntu upgrade, but when this option is selected, the machine either reboots and displays the Grub2 menu again or hangs with a black screen and does not respond to keyboard entries.

Tried the following fixes:

- Booted from Windows recovery disk and run bootrec.exe /fixboot and fixmbr

- Removed Grub2 and reinstalled it using Boot Repair running from a bootable CD

Phillip Susi (psusi) wrote :

Please run the boot info script and attach the results:

http://sourceforge.net/projects/bootinfoscript/

Changed in grub2 (Ubuntu):
status: New → Incomplete

Hi Phillip,

Thanks for your message.

Run bootinfoscript from live CD and attached results.txt as requested.

Best regards, Robert

> Date: Sun, 13 Jan 2013 23:31:07 +0000
> From: <email address hidden>
> To: <email address hidden>
> Subject: [Bug 1099127] Re: Grub2 lists, but can't boot Windows 7 after upgrade from Ubuntu 12.04 to 12.10.
>
> Please run the boot info script and attach the results:
>
> http://sourceforge.net/projects/bootinfoscript/
>
>
> ** Changed in: grub2 (Ubuntu)
> Status: New => Incomplete
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1099127
>
> Title:
> Grub2 lists, but can't boot Windows 7 after upgrade from Ubuntu 12.04
> to 12.10.
>
> Status in “grub2” package in Ubuntu:
> Incomplete
>
> Bug description:
> Grub 2 can no longer boot Windows 7 after upgrade from Ubuntu 12.04 to
> 12.10. The machine has two physical SATA HDDs, both configured with
> single partition. Disk one (sdb1) runs Ubuntu 12.10 and disk two
> (sdc1) runs Windows7. Disk sda1 is an IDE Zip drive. Both operating
> systems boot independently when boot priority is changed in the system
> BIOS. Windows remaind visible in the Grub2 menu after the Ubuntu
> upgrade, but when this option is selected, the machine either reboots
> and displays the Grub2 menu again or hangs with a black screen and
> does not respond to keyboard entries.
>
> Tried the following fixes:
>
> - Booted from Windows recovery disk and run bootrec.exe /fixboot and
> fixmbr
>
> - Removed Grub2 and reinstalled it using Boot Repair running from a
> bootable CD
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1099127/+subscriptions

Changed in grub2 (Ubuntu):
status: Incomplete → Confirmed
Phillip Susi (psusi) wrote :

It appears that grub2 is not generating the drivemap command to fake the windows boot sector into thinking the drive it is on is actually the primary drive in the system ( it can't boot from any other ).

summary: - Grub2 lists, but can't boot Windows 7 after upgrade from Ubuntu 12.04 to
- 12.10.
+ Grub2 doesnt drivemap windows entries booting from second disk
Changed in grub2 (Ubuntu):
status: Confirmed → Triaged
importance: Undecided → High
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