External Hard Drive not Showing up on Mac OS X? Here’s How to Fix it
Using an external hard drive with your Mac is a no-brainer; you connect the hard drive to your USB or Thunderbolt port and the drive will appear in Finder. But sometimes, even the simplest of things become insanely complicated. You plug an external hard drive into your Mac and nothing happens. What do you do then?
This tutorial explains some simple methods to finding a missing external drive in Mac OS X.
1: Check for Basic Errors
Before you go into further details, first check that the drive is properly plugged in, and then make sure the the hard drive isn’t actually showing up. For this, go to File > New Finder Window and scroll down to Devices. The hard drive should be listed under the Remote Disc.
Didn’t help? Let’s move on.
2: Try to Mount the Hard Drive in OS X Finder
The hard drive may be connected to your Mac but not necessarily mounted. When you mount a volume, it essentially enables you to access its contents. To check if a hard drive is mounted, open Disk Utility by selecting Go > Utilities.
Check to see if the hard drive is present in the list on the left. If it is, check underneath it for a volume. If it isn’t greyed out, highlight the volume and click the Mount icon.
Now open a Finder window and check under Devices to see the mounted hard drive.
3: Provide an Ample Power to Drive
If it still doesn’t show up in the Finder, the chances are that it needs more power. A normal USB carries 5V of power to the drive, but some drives just need more than that. The issue may be resolved using a USB power cable, which provides an ample power to the hard drive enabling it to work directly from your Mac.
If you’ve followed this guide, please share your experience with us in the comments below.