I purchased a Western Digital My Passport Ultra 4tb during a WD website summer sale. ($89 total) 15 minutes into a time machine backup, the drive seemed to die. I can no longer access it from my MacBook Pro. === Given that I am not experienced with MacOS, 2 questions: 1) How can I really really be sure the drive is dead based on what MacOS tells me? 2) During that 15 minutes, a lot of personal data was transferred. If the drive is dead, how can I be sure that the personal data I transferred is inaccessible to someone really smart at hard drive data recovery? Before, on Windows, before I tossed old drives in laptops, I use SDEL (secure delete) set at military encryption level from the command line. === Just venting I've thought about NOT returning it and eating the $89 rather than leaving my personal data exposed, since I can't seem to access it to re-format it. But I've had too many WD drives die in the past 2-3 years. I want them to pay / refund my $. How much is "too many" ? At least 50% of the My Passport Ultras I've ordered online during their sales have died. Maybe the drives they put on sale are duds? Worst example: When RMA-ing the wireless My Passport drive, 2 replacement drives in a row were duds and flashed error codes within 10 min of usage. After the 2'nd dud, I pleaded to WD for my $ back. Nope. (Outside of 30 days) I asked for a regular (non-wireless) My Passport Ultra, NOT another wireless. But they would only give me one valued at $100 less than what I paid for the original My Passport Wireless drive I asked for a replacement of a different drive closer to the equal value I paid. "No."