Primary Site In Multisite Network

I would like to know how to disable buddypress for the primary site, but leave it active for all of the network site. I would like to have used for only a blog signup and feature site. While…, serve as buddypress sites within the network.

Currently, has the links for buddypress features (groups, forums, etc.) and the registration page is pointing to the buddypress registration and not the blog signup (using edublogs theme).