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.
