HELP! My Book - WD Player

WD Legacy Products WD TV Media Player
3

There have been several reports of up to 8TB Capacity Drives working on the latest WDTV’s

I can only (personally) confirm my 4TB My Book works fine via USB.

There could be a few reasons why the OP’s 6TB is not being recognized … but the user has provided very little info. So, it’s a guessing game.