Hi all, I've got an infuriating problems with an older WD mybook studio II external drive. It's shows in disk utility but not in finder, and won't mount in DU. I found a thread suggesting that if fschk shows up in activity monitor, then force quit that process, but the process doesn't show when i plug in the drive. I've tried using both the FW and USB but still no joy. I've also tried the terminal mount command. And i've plugged it to two different macs, one with mavericks and one with el capitan, same problem. The drive spins, it powers up but just won't mount so I'm at a los as to what to do next. Any ideas of what else I can try?