with Windows, I launched HP USB Disk Storage Format Tool, as somebody has claimed it to have had success, but I ended up with a 'Device media is write-protected' error.again, I wasted some time with OS X and some built-in command-line tools (which I guess are just the command-line counterpart of the Disk Utility app).with Windows 10, I tried removing all partitions from the physical drive with the built-in Disk Manager and some other tools like EaseUS Partition Master.
I also tried to change from MBR to GUID and vice-versa with no success.
Whenever I plug this device into a computer, there is a virtual CD unit that pops up called 'WD Unlocker', and I'm trying to remove it physically, instead of just hiding it (I found many guides on this, and by the way none of them worked). I have a WD My Book (3TB storage, USB 3), and just like many other enthusiast owners of this external drive, I'm trying to get rid of their crapware.