I have found another solution and I know it works in Windows 7 for I have used this process. MY BOOK drive is no longer write protected. The write protection has occured when an autonomous update for Windows 7 was made by
The solution is “DiskPart”.
In the search program and files window of START type: Run
Under Programs click on: Run
Type after the Open: DiskPart
At the DISKPART prompt type: list volume (this will list all the drives on your computer and their assigned volume numbers.)
Next you want to set focus on the write protected drive. Enter at the DISKPART prompt: select volume # (where # is the volume for the device of interest.)
Now type “attributes disk clear readonly” and then type “attributes volume clear readonly” at the DISKPART prompt (this will reset the drive attributes.)
Check the drive in question, you should now be able to access the disk with full permissions.