My laptop has two hard drives, one 320GB HDD and a 30GB SSD. I installed Windows 8 on the HDD and Ubuntu on the SSD. However, after I installed Ubuntu, Windows 8 did not appear on the boot list. I tried boot-repair, but this didn't help.Here is the output of my fdisk -l:

Disk /dev/sda: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders, total 625142448 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: 0x6cd9314a

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048   625139711   312568832    7  HPFS/NTFS/exFAT

Disk /dev/sdb: 30.0 GB, 30016659456 bytes
255 heads, 63 sectors/track, 3649 cylinders, total 58626288 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: 0x6cd93132

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *        2048      207126      102539+  83  Linux
/dev/sdb2          208894    58626047    29208577    5  Extended
/dev/sdb5          208896     4112383     1951744   82  Linux swap / Solaris
/dev/sdb6         4114432    58626047    27255808   83  Linux

Disk /dev/mmcblk0: 3965 MB, 3965190144 bytes
49 heads, 48 sectors/track, 3292 cylinders, total 7744512 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: 0x0009c694

        Device Boot      Start         End      Blocks   Id  System
/dev/mmcblk0p1   *        8192     7744511     3868160    b  W95 FAT32

I also tried sudo grub-update, but that also did nothing.