Changing of Local Drive to Removable drive For Seagate Expansion Portable Drive !?

Guys please help me in answering my qusetion,recently i purchased Seagate Portable Drive (1TB) for connecting my Home theater. So as i'm connecting to my computer its repeasenting as Local Drive & i want to chage it to Removable Drive (Same as Pendrive) so that my home theater will recognize it. Plz help me,waiting for ur reply !