![]() ![]() Follow these steps to erase and reformat your drive :ġ.) If you have any important data on your USB flash drive, make sure you temporarily copy the files to your Mac’s desktop.Ģ.) Open up Disk Utility (Applications > Utilities) and select your flash drive on the list to the left. If the previous method doesn’t help you, the next one certainly will. c) Expand ‘ Universal Serial Bus Controller, right-click and select update ‘ update driver software’. a) Move the mouse to bottom left corner and right-click on the ‘Start’ icon. Method 1: Update the drivers for the USB and check. You must do this while your storage device is connected. To check the USB drives format, press Cmd + Space to open Spotlight, then type Disk Utility and hit Enter to launch the Disk Utility. I am here to help you and would suggest these methods. When you delete a file from your USB flash drive on a Mac, it goes to a special hidden directory on the drive and stays there until you empty the Trash. The first and most common way to fix this problem is to ensure your Trash has been emptied in Mac OS X. NOTE: Prevent computer from sleeping when display is off may not be avilable for all versions of macOS. Enable Prevent computer from sleeping automatically when display is off. Of course, this doesn’t quite add up to my flash drive’s full size so clearly something I can’t see is there taking up space. Click on the Apple icon then select System Preferences/System Settings. ![]() Finally, if your drive shows up only on Windows or only on Mac, you might be dealing. On the other hand, if the drive shows up on the new device, your USB port may be the problem. That might mean its gone bad or it might need to be reformatted. After a while you might not be able to take full advantage of your flash drive’s full capacity, because these unwanted files are taking up space.įor example, if I have a 4GB drive and I only have about 1.5GB of usable data on it, I might only have about 750MB of free space left. If the drive doesnt show up on any computer, it likely means its a problem with the flash drive. Both operating systems routinely create hidden files, and items you thought you deleted may still be there after all. Edit Finder Preferences When you connect a drive to Mac, it should appear in Finder under Locations. If you’ve got another port, try connecting the device to that one. ![]() Sometimes, though, a particular brand or model will not play nice when you frequently connect it to both Windows and Mac systems. Change USB ports A damaged USB or flash drive port on your Mac could be the reason why external drives won’t show up. Wait a few minutes, and click File > Refresh Information. Nearly everyone has a USB flash drive for portable data storage nowadays, and for the most part they work with almost any computer effortlessly. Open System Information and disconnect the USB device from your computer. Be sure to select the drive (all the way to the left) not a volume (indented below the drive name). To format for a PC: Insert the drive in the Mac and start Disk Utility (Utilities folder). Reclaim lost storage space by getting rid of the hidden files and junk that accumulates on your USB flash drive over time. The drive is probably now formatted for a Mac only file system. ![]()
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