..PC won't recognize a WD My Book previously used as backup for a Bell HDPVR

I no longer use the pvr or need the backup, so wanted to use the drive for backing up on my PC, but I’m unable to access it to format it accordingly - don’t have sufficient permissions…  thoughts?

Hi, just to make sure you can try reviewing the steps from the following KB article. 

How to partition and format a WD drive on Windows (8, 7, Vista, XP) and Mac OSX