This could be one of the reasons for Mac doesn’t recognize external hard drive issues. Simply plug the external hard drive to the USB port only and then open Finder and check the drive.Īnother important solution you can try is to change the finder settings.Now, it’s time to turn on the Mac system, MacBook Pro or even iMac.Then, you should wait for 30 seconds or even 5 minutes and then plug the cords.To do so, you have to follow the below steps: In that case, it is better if you try reconnecting the drive or if it still does not work then restart your Mac PC. Sometimes your system does not respond so well to the actions you want your system to perform. Also, if you have another Mac system at your home or at your friend’s home then you can connect the drive there and check whether it shows or not.Īlso Read: Troubleshoot Toshiba External Hard Drive Not Showing Up If it fails to fix the issue then you can also change the USB cable and then reconnect it. So, you should try to reconnect the external hard drive to the same or even another compatible USB port. It is possible that you may have not connected the external hard drive to the USB port which is present on the Macbook/iMac/mini/Pro properly. The very first solution you should try when you get external hard drive not showing up Mac Catalina error is to check the USB connectivity. 12: Verify For The Hardware & Software Updates.#11: Run the Trojan/Malware Cleaner Software.#8: Check And Fix Errors In USB With Terminal.

#7: Run First Aid On An External Hard Drive.#5: Enable External Hard Drive Visibility Option.#4: Mount An External Hard Drive On Mac.

Drive not showing up in disk utility