I commented the problem, hoping can give me some light. I am a regular user of WD and never had problems with his records until a few weeks ago while dragging some images to copy my old hard drive (My book Essential), this was frozen and could no longer be recognized by my MBP RetinaDisplay. I used Data Rescue and was able to recover most files virtually, pending transfer to a new album … here begins the main story.
I purchased the WD 2TB MyCloud, but by mistake, my brother formatted in HSF + from the Mac, regardless Cloud feature and associated serial program (with the formatting … curiously the files were aren’t deleted).The disk can not be recognized by Utility / Disks MBPro and by the Data Rescue. Curiously, it appears and you can access it with the ethernet cable. With USB3.0 cable is not possible, so I assume it has to be formatted deleted important information from the software and / or firmware. In addition, we attempted to ERASE the files that were left and get the error message: -50.
As I can do again functional to my disk and that is recognized by the otdenador via USB
Thanks for your help