How to hide the windows operating system in list of grub bootloader.

Hi, everyone.
Today, I have a good idea for hide windows operating system in list of grub bootloader. In this case, I'm use grub version 1.99 on ubuntu11.10.

The first priority is you should update and install grub boot-loader for last version. If you sure about your grub boot-loader version then let's go.

1. Edit /etc/default/grub by your editor.

2. Add "GRUB_DISABLE_OS_PROBER=true" to a new line or uncomment it, if configuration is already exist.

3. Save and quit to terminal, and then type command in to your terminal as follows:

$: update-grub2

This is my output after run command update-grub2.

When you've step no.3 completed. you should reboot for check the result in grub boot-loader list. If you need to unhide windows operating system in list of grub boot-loader, It's easy to do it. You just edit the /etc/default/grub by comment line "#GRUB_DISABLE_OS_PROBER=true".
Finally, I hope again and again for my explanation to make you understand to this knowledge. I'm apologize for my bad skill English language. See you next time. Goodbye.