

How to Solve Missing External Hard Drive after macOS 12 Update 1. Mac PC could be working slowly and thus taking long to register the connectionĪll these issues can be the reasons why there is a missing external hard drive after macOS 12 update.The USB connector could be damaged and thus not recognizing the device.The Cable is frayed or wires are exposed.

If your external hard drive is not showing up on macOS 12 after plugging it in, then there should be some specific reasons. Reasons Why External Hard Drives Aren’t Showing Up on macOS 12

