Why Is My External Hard Drive Showing Up Twice Mac - T-Tees - Your Answers Await, Life's Questions Unraveled

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Generally, a connected external hard drive only shows up once in Desktop, Finder’s sidebar, and the Disk Utility. However, some Mac users find their external hard drives display twice on Mac, which is confusing to identify the real one. Besides, it affects your workflow and file management.

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It is abnormal when the external hard drive shows up twice on your Mac‘s Finder or Desktop. It could occur to an external HDD, SSD, and USB flash drive on Mac running macOS Sonoma and earlier. In this post, we are going to explore more about this issue, including the possible reasons and fixes. Stay tuned to know more.

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Why does the external hard drive show up twice on Mac

There are multiple possible causes for the external hard drives showing up twice on your Mac. It could be the outdated macOS and incompatible drivers associated with your external hard drive. In addition, the culprit of the duplication of external hard drives could be drive name conflicts, corrupted launch service database, etc.

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How to fix the external hard drive shows up twice on Mac

When you want to use an external hard drive on a Mac but only find a duplicate drive appearance, it perplexes you. If it shows up twice on the Desktop or in Finder’s sidebar, it confuses you to manage your files on the correct external hard drive. Therefore, it is necessary to fix duplicate external hard drives on Mac. Try the following solutions.

Reconnect the duplicate drive

If you see the connected external hard drive displaying twice on your Mac, you can properly eject the drive and reconnect it to your Mac. Make sure all the connection-involved elements are not defective such as the USB port, the USB cable, the USB adapter, etc. If the problem remains, disconnect the drive, restart your Mac, and then reconnect it again.

Update macOS and drivers

It is always recommended to keep your Mac updated to date. Outdated macOS could cause some issues on your Mac such as MacBook keeps restarting and Mac download not working. Outdated or corrupted disk drivers for external hard drives could make the drive perform abnormally on your Mac.

When the external hard drive shows up twice on Mac, it could be caused by the macOS- or driver-related issue. Then, you can try to update macOS and the external hard drive driver to fix the problem. Here’s how:

Reset SMC

Various hardware functions are managed by SMC(System Management Controller), and resetting SMC is a potential option to fix the issue with the external hard drives. Therefore, you can try to reset SMC on your Mac when you find the Mac listing your external hard drive multiple times.

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Reset the launch services database

An application that is currently running can open other applications, documents, or URLs thanks to Launch Services, a fundamental macOS feature. When the Finder, Desktoop, and Disk Utility list the external hard drive twice, it could be related to the launch services database, try to reset it.

Rename the external hard drive

Have you connected multiple external hard drives to your Mac? Perhaps, some of them have the same drive name. You can resolve conflicting drive names by renaming your external drives. Follow the steps below:

Check and repair the external drive

Another alternative solution you can try to fix the external hard drive showing up twice on Mac is running Disk Utility First Aid to check and repair disk errors. The duplicate disk appearance could be the result of invisible disk errors. First Aid in Disk Utility, the macOS built-in tool can help to repair the drive.

Remove the duplicate entry

You can manually remove the duplicate entries for the same drive in Disk Utility. There should be only one entry for each connected external hard drive in your Mac Disk Utility, Finder’s sidebar, and the desktop. There is a problem if the same drive has multiple entries on your Mac. Here’s how to remove the wrong entry:

Reformat the external hard drive

In case all the above methods don’t work to fix the external hard drive showing up twice on Mac, you can try the last resort which is reformatting the external hard drive to eliminate all logical disk errors. However, it will erase all drive data. Therefore, you’d better backup the external drive first, or run iBoysoft Data Recovery for Mac to recover deleted/lost files and get data off the drive.

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Then, you can format the external hard drive on a Mac without losing data. After that, reconnect the external hard drive to your Mac to see whether it shows up duplicate entries.