Remove Security

I am trying to set my hard drive as a library to import photos directly onto insted of going through iPhoto. I figured out  how to do this but I keep getting an error message saying I don’t have permissions. Therefore, I am trying to remove the security so I can set this up but the box to remove security is faded out and I can not make that selection. Anyone have any tips?

Hi there and welcome to the WD community.

If you go to get info on the unit and try to set the permission the options are grayed out? I would like to know if this drive is formatted for Mac?