MyBook Live Duo and Kodi

I’ve just installed Kodi on the Xbox One and want to play files from my WD Mybook Live Duo NAS. Connected to the WDMB via usb is another external hard drive. I can find the MyBook drive on Kodi, however the usb hard drive attached to my MYBook does not show up. It works fine on every other device I have in the house. Kodi is the first thing to not find it

Just wondering if anyone has any experience with setting up Kodi and WD drives?

Thanks in advance for any insights.