If you have an older USB flash drive thats been beaten around, it may not work even if you reformat it. To copy, just drag and drop the files from the flash drive menu to the desktop or desired folder.įaulty Drives Occasionally, a faulty flash drive becomes unreadable after its been used for a while. To back up your data, insert the USB drive into the computer you used with the drive and copy the contents of the drive to the desktop or a folder on the computer. If you have already saved anything on the drive, back up the data before you format the flash drive. Warning Formatting a flash drive erases all data currently stored on it. Some older flash drives may only have the options FAT 16 or FAT 32.Ĭhoose the highest number available if MS-DOS (FAT) doesnt appear. When you see the volume format types listed, choose MS-DOS (FAT). If you plug in your drive and your Mac wont read it, you need to format it.įormatting To format a flash drive on a Mac, plug in the drive and open the Applications folder, the Utilities folder and then Disk Utility. If your flash drive states that it was formatted with one of these volume types, you should be able to plug it into your Mac and use it without a problem.
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