If you think that the USB port in your Mac might be damaged, try to connect a different external device (HDD, flash drive, etc.) to your computer to see if it mounts correctly. To know if the latter is true in your case, simply try to use a different cable. It’s possible that the USB cable that you’re using to mount the drive is either loose in the port and you need to adjust it slightly, or it is damaged. In general, this is the most common reason why an external HDD won’t connect to a MacBook. Here’s what can be causing this problem: Reason How do I get my external hard drive to show up in Finder Mac?Ĭannot mount an external drive on Mac? Then it might be helpful for your situation to know the potential reasons why your external drive won’t mount in the first place.How do I force my Mac to mount an external hard drive?.What does it mean to mount an external hard drive on a Mac?.Option 8: Force Mount the Drive in Disk Utility.

Option 7: Run First Aid in Disk Utility.Option 6: Use a Third-Party External Drive Mounter.

Option 5: Change macOS Display Settings.

How to Fix External Drive that Is Not Mounting on Mac.

How to Get Data from a Drive That Is Not Mounted.

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