Here are the results:
Disk /dev/sda: 98.5 GB, 98522403840 bytes
255 heads, 63 sectors/track, 11978 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 1 5 40131 ce Unknown
/dev/sda2 6 5803 46572435 17 Hidden HPFS/NTFS
/dev/sda3 5804 11554 46194907+ 5 Extended
/dev/sda4 11555 11978 3405780 cb Unknown
/dev/sda5 * 5804 5816 104391 83 Linux
/dev/sda6 5817 11554 46090453+ 8e Linux LVM
This is hopeful, I think the Hidden HPFS/NTFS might be my Windows OS.