Important As losing the access to data is the most direct impact of Mac not detecting a USB drive, you might need to perform USB data recovery on Mac. Have you tried to restart your Mac once or twice? Before taking further measures, don't forget the most efficient way to tackle commonplace hardware glitches that arises from time to time. If this operating system restarting fails to solve the current problem, move on to check the physical connectivity issue step by step. Plug the USB drive out from the not working USB port and change to the other USB port. Try all the available USB ports on your Mac. Did you use a USB connection cable or a USB-C adapter? If yes, take the USB drive out, and directly plug it in the USB port. Is there the other Mac computer available to you? If yes, try to connect the USB drive to this computer. For SD card owners, the common way to connect an SD card to a Mac needs a card reader. If changing the USB ports did not work, try to change a card reader for a new round of tests. The four steps of troubleshooting a USB drive not showing up on Mac are very basic, however, quite helpful in most cases. Change settings for Mac detecting an external hard disk on the desktop Each step can help us exclude the issues of a bad/loose connection, a not working USB port, a lack of power, and other superficial phenomenons. Occasionally, your Mac has already recognized the USB flash drive but not shown it on the desktop. Thus, you should go to Finder > Preferences > General and make sure the "External disks" option is ticked. Then you'll see the USB flash drive showing up on Mac desktop.įix 3. #How to reformat macbook air 2019 for macĬhange settings for Mac recognize an external hard disk in the Finderįinder is the other access for us to check a connected external drive on Mac.
#How to reformat macbook air 2019 for mac.
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