I have a 230 Gigs HDD on my laptop,
i have 50 gigs extended for my linux,
i have 80 gigs empty ntfs partition,
and 100 gigs ntfs partition where i store all my important data, (i have about 50 gigs of important things)
today i mounted the 100 gigs partition took something from it, unmounted it back,
and then when i mounted it again it was EMPTY !!!
all the data is gone !!!!
i used to mount it via the terminal : sudo mount ntfs /dev/sda5 /media/E
where E is a dir that i make (when i make it i change the permissions of media to 777 then after creating the dir, i change it back to normal)

Guys you cant imagine how much this data is important to me, Plz HelP, 
thnx in advance