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How to Clear a Flash Drive on PC or Mac

Method 1 Method 1 of 2: Windows
  1. 1 Plug the flash drive into your PC. You can connect your flash drive to any working USB port on your computer.
  2. 2 Double-click This PC. It’s the computer icon on your desktop.
    • If you don’t see this icon, press ⊞ Win+E to open the File Explorer, then double-click This PC in the left sidebar.
  3. 3 Right-click your flash drive. It’s under the “Devices and drives” header in the right panel. A drop-down menu will appear.
  4. 4 Click Format…. The Format window will appear.
  5. 5 Click Start. It’s at the bottom of the window. A confirmation message will appear, letting you know that all data on the drive will be erased.
  6. 6 Click OK. Windows will now remove all of the data from your flash drive. You’ll see a message that says “Format Complete” once the drive is cleared.
  7. 7 Click OK. This closes the window.
Method 2 Method 2 of 2: macOS
  1. 1 Plug the flash drive into your Mac. You can connect your flash drive to any working USB port on your computer.
  2. 2 Open Finder . It’s on the Dock.
  3. 3 Open the Applications folder. Click Applications in the left sidebar, or double-click Applications in the right panel.
  4. 4 Double-click the Utilities folder.
  5. 5 Double-click Disk Utility.
  6. 6 Select your flash drive. It’s in the left panel.
  7. 7 Click the Erase tab. It’s at the top of the right panel.
  8. 8 Select a format. The default formatting option is OS X Extended (Journaled) should work for most people.
    • If you want to erase all of the files and use the drive on a Windows PC, select MS-DOS (Fat) instead.
  9. 9 Click Erase…. It’s at the bottom-right corner of the window. A confirmation message will appear.
  10. 10 Click Erase. This removes all of the files from your flash drive.