Unable to lock the disk

Hi There,

I have bought a 1 Tb WD My passport Ultra external ard disk. so when i first connected to my laptop in side the ther were .exe fsetup files / so i installed them all. but there is no software for locking my disk. 

so my question is is this disk comes with a locking software or not? 

if yes can i use this software and lock seperate folders in my disk?

anyone please help

thank you.


You can download the WD security from the link below.