Hi Paolo,
I had read your thread even before posting mine to see if your case was the same as mine. But the problem in my situation was that the drive did not behave strangely in any way. It mounted properly just like everyday - it was simply empty all of a sudden.
The drive itself will probably continue working normally but, of course, I don’t want to write new data over my (hopefully still existing) old data.
(Not to mention that this drive is clearly far less trustworthy now… )
I’m in contact with WD support but I doubt there will be an easy solution to this. :-/
