juaneldebla@juaneldebla:~$ gedit  /etc/grub.d/40_custom
juaneldebla@juaneldebla:~$ sudo gedit /etc/grub.d/11_Windows
[sudo] password for juaneldebla: 
juaneldebla@juaneldebla:~$ gksudo gedit /etc/grub.d/11_Windows
juaneldebla@juaneldebla:~$  sudo chmod a+x /etc/grub.d/11_Windows
juaneldebla@juaneldebla:~$ sudo update-grub
Searching for GRUB installation directory ... found: /boot/grub
Searching for default file ... found: /boot/grub/default
Testing for an existing GRUB menu.lst file ... found: /boot/grub/menu.lst
Searching for splash image ... none found, skipping ...
Found kernel: /boot/vmlinuz-2.6.38-8-generic
Found kernel: /boot/vmlinuz-2.6.35-23-generic
Found kernel: /boot/vmlinuz-2.6.32-25-generic
Found GRUB 2: /boot/grub/core.img
Found kernel: /boot/memtest86+.bin
Updating /boot/grub/menu.lst ... done