WD Book shows no writable partion

Book shows ‘No Writeable partion found’… How do I get into the book to back up my hard drive?

Not only does book show no writeable partition but I cannot access Backup or Retrieve of software.  I cannot look at nor does any files show in the WD book unit.  How do I fix this ?  Must I FORMAT THE BOOK?  please help?  Thanks 

Hi, as a troubleshooting step, try using another USB cables and connecting the My Book power adapter directly to a wall socket. You can also try running a DLG test, to rule out any possible hardware damage. 

How to test a drive for problems using Data Lifeguard Diagnostics for Windows 

I have the same problem as Roland, and have tried all of the diagnostics on lifeguard diagnostics.  Nothing works.