Nutterproductio

Hey Dude I bought a My Book 1TB Hard Drive Today and I had the same problem

I figured out a way around this

heres what you do

(on a Mac)

Go to your finder
Go to applications
Go to Utilities
Go to Disk Utility
Select Your External Hard Drive on the Left
Click on the Partition Tab
Click on options
Click on Apple Partition Map
Click Ok
Click Partition


BAM! Your done :-)