When we plug the external hard drive in a Mac OS computer, it suddenly fails to show up. How can we fix the "USB flash drive not showing up" issue on Mac? How to recover lost data on your Mac if your Mac can read the external hard drive but unable to open it?

Users like to use external hard drives which are often used for storage, data backup, and transferring of computer Files. Usually, when you connect an external hard drive to your Mac, you will quickly see it mount on the desktop. And the Mac OS makes sure it's easy to find since Mac's treat it the same way as an internal disk. However, sometimes, an external drive doesn't show up on your Mac. It's annoying, especially when you desperately need the data inside.

How to fix "External Hard Drive Not Showing Up" on Mac?
First solution: Check all the port
When we encounter external hard drive not showing up in Disk Utility/Finder, the first thing is to check the USB port, the USB cable, and the drive.

1. Check the cable from the external hard drive to our Mac is appropriately connected.

2. Check the condition of the USB cable or USB port. You can try a different cable or port to identify.

3. Reboot the Mac OS to see if it was an open program or app to stop detecting the drive.

4. Try attaching the external hard drive to another computer to see if it works on that one too.

Solution 2: recover data from the external hard drive first
Most repair actions can result in data loss on the external hard drive, so you will need a reliable data recovery software to help you recover deleted files from external hard drive on Mac, the Bitwar Data Recovery for Mac is a read-only and easy-to-use data recovery software for mac which supports to recover deleted or lost files from any storage devices. Such as hard disk, external hard drives, digital cameras, SD cards, USB flash drives, Memory cards, media players, and other portable drives.

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