Once you are sure that the WD My Passport is corrupted and becomes inaccessible, you had better stop performing any further data writing to this external.
You can connect the WD My Passport to another computer to see if it can work normally. Here are 4 fixes for you on MAC for fixing the wd disk not showing up problem. Windows? -> how to fix wd usb disk not showing up on Windows 10 If a WD My Passport external hard drive is not recognized by Mac OS, you had better make it clear if the problem is caused by external HDD error or Mac OS crash. WD My Passport external hard drive is able to work on Mac and Windows PC for data transferring or backup. So can anybody tell me how to recover data from an unreadable external hard drive for Mac? I have some important excel files on this external, so I would appreciate it very much if anybody can recommend useful excel recovery software.' ' I have a WD My Passport external which is not recognized on Mac, but I have stored many files on this external HDD.