Step 2: Immediately press and hold the Shift key, then release the Shift key when you see the loading bar. Step 1: Restart your Mac (some Mac computers play a startup chime). To confirm this, you can boot your Mac into Safe mode for check. It’s possible that some incompatible applications prevent your disk from loading. For portable USB external hard drives, make sure the USB port is not wobbly, dusty, or loose. You can try another USB port if the USB port doesn't work due to physical damage.For Desktop external hard drives, let’s say, Seagate Backup plus and WD Elements Desktop, make sure the external hard drive is externally connected to a power socket.Therefore, before diving into something deeper, here’s what you can do: Plus, desktop hard disks usually require external charges. It’s always a good idea to check the connection between your external HD and the Mac. Solutions to make external hard drive show on Mac This post will show you how to deal with this situation and hope it can help you to some extent. However, it can also be bothersome if you can’t see external HD on Mac. How to Troubleshoot External Hard Drive Not Showing Up on MacĮxternal hard drive can be a great supply if you don’t have enough space on Mac.
