When you insert a USB flash drive into the USB port of your Apple computer, Mac OS X automatically reads the contents of the flash drive. It may then display a.

Flash Drives Are Missing on My Mac! 'Hi, I have tried a number of ways to connect my USB drives to my Mac but none have worked. My Mac just doesn’t show any signal of the drive. I have important files on these drives, and additionally would like to use USBs on my Mac in the future. Please get these missing USB flash drives to show up Thanks in advance​' Part 1. Fix USB Flash Drive Not Showing Up on Mac To get your USB flash drive to show up, you need to check the Finder preferences and the reset your USB ports.

Check the Finder Preference 1. Click Finder in the upper left corner of the screen and select Preferences from the dropdown menu 2. Under ‘Show these items on the desktop:’ make sure External disks is checked If the Finder preferences are set to mount external drives to the desktop we will need to determine if the USB flash drive is detected by the computer • Open Spotlight Search bar by pressing 'command' + 'spacebar' • Type System Information and select it • Under Hardware, select USB If you see the flash drive listed in the USB hub, the USB flash drive is now detected properly and you can access the data on the drive by navigating to it normally If not, you can follow step 2 to reset your USB flash drive.

Reset USB Ports on Mac 1. Unplug your USB devices, click the Apple logo and Restart your Mac. A reboot is a simple way of solving common hardware problems.

Go to System Information by typing it in the Spotlight Search bar. Under Hardware, select USB to view a list of the USB devices connected to your Mac. If they are still not recognized, continue. Shut down the computer. Reset your Mac’s NVRAM by holding the Command-Option-P-R keys together as you start up.

Release the keys after the Apple logo appears. 4. Restart your Mac. 5. Press Command-Option-Esc to force quit any applications that are not responding. If all apps are responding, try to plug in your USB again. If unrecognized, continue. Click the Apple menu and click 'Sleep'.

Wait a few seconds, and then press any key to wake the computer. Restart your computer. Click the Apple menu and click 'Shut Down' to turn it off completely. If it isn't shutting down, hold the power button for at least 10 seconds to force it to shut down. Unplug the power cord, wait 15 seconds, then reattach the cord.

Wait at least five seconds, then power the Mac up again. After that, your USB will be detected and work again after the operations above. Restore Data from USB Flash Drive If your computer can read the USB drive but is unable to open the drive or you've already formatted it the device, your data is still recoverable. Quickbooks for mac tutorial.