Restoring Windows 7 entry in grub boot loader?

[justinstrack]

Okay I installed some updates for Ubuntu Ultimate 2.5. After I was finish I decided to reboot & boot into Windows 7 but I can't it gives me this error:

"Error: Invalid Signation, Press any key to continue."

When I press "e" on the Windows 7 line on the grub menu list. it shows:

"chainloader +1"

What can I do so that I can boot into windows again with the grub menu?

[justinstrack]

Found my answer: http://ubuntuforums.org/showthread.php?t=1264151&page=3

1.sudo apt-get install os-prober
2. sudo os-prober,
3.sudo mv /boot/grub/device.map /boot/grub/device.map.bak
4.sudo update-grub (came back clean)
5.reboot (all is well)