Re: grub2 confuses Windows Vista/7 with Windows Recovery Environment

[address@hidden]

Thanks Jonathan,

I'd love to be of assistance, but have no experience in such things.

 

All,

Let me know if I can help in any way.

 

Donald Norman

 

 

On November 23, 2010 at 4:37 PM Jonathan Winterflood <address@hidden> wrote:

> Hi all,Having recently installed Ubuntu 10.10 on a machine alongside Vista,
> I noticed that grub (1.98+20100804-5ubuntu3) incorrectly detects the nature
> of my "Windows Recovery Environment" and "Windows Vista" partitions:
>
> ### BEGIN /etc/grub.d/30_os-prober ###
> menuentry "Windows Vista (loader) (on /dev/sda1)" {
>     insmod part_msdos
>     insmod ntfs
>     set root='(hd0,msdos1)'
>     search --no-floppy --fs-uuid --set 64bce3a1bce36bcc
>     chainloader +1
> }
> menuentry "Windows Recovery Environment (loader) (on /dev/sda2)" {
>     insmod part_msdos
>     insmod ntfs
>     set root='(hd0,msdos2)'
>     search --no-floppy --fs-uuid --set bc3c53c13c5374fc
>     drivemap -s (hd0) ${root}
>     chainloader +1
> }
> ### END /etc/grub.d/30_os-prober ###
>
> The correct order is the opposite (Vista on sda2)
> Booting the 'wrong' one seems to boot the correct one fine, despite
> "drivemap -s (hd0) ${root}" being missing/added.
>
>
> This means that the computer's main user (not an experienced user) could get
> very confused and trash the whole system....
> I could recreate the entries as custom (as mentioned in a previous message
> on help-grub, see below), but then there would be two sets of Windows
> entries, which may be even more confusing....
>
> This seems to be a bug in os-prober to me, but a quick look at 30_os-prober
> has left me unable to diagnose where the problem is.
>
> It has been previously mentioned here (with apparently no recognition or
> de-qualification as a bug):
> 1) http://lists.gnu.org/archive/html/bug-grub/2010-11/msg00010.html
> 2) http://lists.gnu.org/archive/html/help-grub/2010-08/msg00022.html
> 3) http://lists.gnu.org/archive/html/help-grub/2010-09/msg00020.html
> re: http://lists.gnu.org/archive/html/help-grub/2010-09/msg00021.html
>
> I cannot see any mention of this on
> http://savannah.gnu.org/bugs/?group=grubeither
>
> I would have a look at patching this myself, but by the time I've been
> pointed in the right direction, the person pointing might be able to just
> fix it...
>
>
> Best Regards,
> --
> Jonathan