WD Unlocker

I know this is probably a remedial question, and I apologize - I am 70 years old and computer illiterate, so I would please ask that any answer be as simple as possible - and I thank you. What is the purpose of WD Unlocker, which just suddenly appeared in a drive, and occupies all the space of the drive. When doing a WD Quick View from my Taskbar icon, it shows that My passport is not locked. If it’s not locked, why do I need WD Unlocker?

Hello,

WD Unlocker is just a virtual CD that is included with your drive. It only carries the software that allows you to password protect your drive. It is needed in order to unlock the drive if you have it locked. 

Although it is saved on the drive it will only occupy a very small portion of it.

The Unlocker shows under “Devices with removable storage” and your external Drive should show under “hard disk drives”