After trying to add 2 new HDD's to MyBook I have lost all hope and chosed to put the original HDD's back to the unit. On the original drives I have not tried to install any SSH or other hack ..
With the original drives Now I see the error Drive B failed. With the other 1TBx2 new drives I got the error Drive A Failed but I was able to access the drives if I tried to mount them on my computer with the Ubuntu Live CD
Any ideea ?