PS3 connect to My Book connected to Laptop

Hi, newbie here.

I just bought My Book 4TB. It is now connected to my Mac. Already installed PS3 media server but still cannot seem to share the files that are in my My Book. PS3 can only see files in my Mac and not the files in my My Book.


Does the media server support USB hard drives connected to a host computer system?

Thank you.
I tried installing PS3 Media Server as based from what I read this will do the trick. Unfortunately it did not. I may be missing some steps.