I have 4 My Book units (650MB, 1TB, 2TB) and they all work fine. Format and go.
I have seen posts state that you can only use 1TB of a 2TB EHD. I'm at 25% on my 2TB and it shows 1.5TB of space remaining, so i'm curious to see what happens when I hit the 1TB remaining mark.
BTW, what is a good way to switch between EHDs? I'm currently moving the power cord and USB from unit to unit. Has anyone tried tying multiple EHDs together w/ a USB hub and then powering up only one unit at a time?
Multiple EHD hub support would would be a great feature to have on a receiver.