Remain calm, all data on WD external hard drive is still there. However, hard drive problems may happen that your WD external hard drive won't mount on Mac, usually when you desperately need to access some data stored on it. Alternatively, you can also select the disk and click on Mount to make it accessible by the operating system using Disk Utility. Generally, when you connect an WD, Seagate, Toshiba, Samsung external hard drive to Mac, it will be automatically mounted, then you can perform read and write operation on it.
Does anyone have any suggestion what I can do? I've also tried to mount it via USB, but again, my system sees the drive, but won't mount it. My mac sees the drive, it just won't mount. I connect it via firewire to my MacBook Pro running OS 10.13 High Sierra.
I have a 1 TB WD external HD that won't mount.
