dual boot - Windows is missing in GRUB!

I have Ubuntu 16.10 with Windows 7. I installed Ubuntu ( first ) then I created a partition for Windows, then installed it on the partition so that deleted GRUB. So I restored GRUB , but now Windows 7 is not appearing in GRUB.

Any solutions on how to add Windows 7 to GRUB?

1. Boot into Ubuntu




2. Open a terminal




3. Run sudo update-grub