Hello, follow the link below for the steps to format the my book and then try again.
http://wdc.custhelp.com/app/answers/detail/a_id/3865/session/L2F2LzEvc25vLzEvdGltZS8xMzQ5NjI3MjgzL3NpZC9HVDNFSTc4bA%3D%3D