The first and foremost thing is to remove the WD My Passport safely from Mac and then re-plug it into the USB port properly.
Are there any other ways to fix WD My Passport unreadable issue on Mac? Of course, just try these solutions one by one: Solution 1: Re-insert the WD My Passport But this operation will remove all data stored on this drive. In most cases, the issue can be repaired with a simple initialize.