I have recently bought a 2TB WD hd for my WD TV Live Media Player and copied everything from my 1TB WD hd across - and added a few more things.
When I have come to connect the new 2tb drive my player does not register a drive being there. I cross referenced this by plugging back in the 1tb drive and that worked fine. I have the player connected to the internet and it is fully up to date with the software. I don’t really know what else to do.