Dual boot problem - Vista disappeared from Grub menu

[Doug]

  On 09/19/2010 10:14 AM, Colin Law wrote:
> Hi
>
> On a machine with dual boot Ubuntu 10.04 and Vista which has been
> working fine for many months, suddenly Vista no longer appears in the
> boot menu (GRUB2).  I have not used Vista for a week so am not sure
> exactly when it happened.  I am not aware of any problems in the
> meantime apart from an update (don't know what to) which complained of
> a download not being available, but this seemed ok when the update was
> run again later.
>
> I have checked /etc/default/grub and run
> sudo update-grub
> which does not report the Vista partition.
> I am able to access the files on the vista partition from Ubuntu and
> it looks ok in gparted (showing the boot flag).
>
> Google reports lots of issues with grub disappearing after updating
> windows but I could not find any reports of Vista disappearing.
>
> Any suggestions will be much appreciated.
>
> Colin
>
I have found some problems with different versions of grub, altho
not ones that developed over time.  The "best" version I have is
the one that came with PCLINUXOS.  You can run it off the live
disk.  (It's not perfect either:  it seems to have found to
versions of the same installed Linux distro!  There are 3 on the
hd.)

-doug

-- 
Blessed are the peacemakers...for they shall be shot at from both sides. --A. M. Greeley