I’ve tried searching other threads, but I never really found a complete answer to my situation. My current setup right now is a 6TB WD My Book connected to a WDTV Live Media Player.
The thing is, it USED to work until several months down the line, then suddenly the media player stopped recognizing the 6TB My Book altogether. I have swapped out using another 6TB My Book and even used a newly bought Media Player, but I got the same thing. I didn’t upgrade the firmware or anything, it just stopped working one day. When I attached the HD to a PC, all the files are intact and working. The media player just doesn’t recognize the drive anymore.