I've installed Ubuntu alongside Windows but at first didn't have a boot option menu.

So, I installed bootrepair and ran it.

This succeeded in granting me a GRUB boot option menu, but Windows isn't on it.

Here is the bootrepair report:

http://paste.ubuntu.com/8098527

Can anyone tell me what might be wrong?

EDIT:

I ran sudo fdisk -l and this is the output:

Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00023fe0

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048   960096255   480047104   83  Linux
/dev/sda2       960098302   976771071     8336385    5  Extended
/dev/sda5       960098304   976771071     8336384   82  Linux swap / Solaris

Disk /dev/sdb: 32.0 GB, 32015679488 bytes
255 heads, 63 sectors/track, 3892 cylinders, total 62530624 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *          32    62530623    31265296    c  W95 FAT32 (LBA)