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How to Fix Boot Camp Assistant USB drive cannot be used error?

By: Author Alex Lim

Posted on  - Last updated:

Categories Troubleshooting

While downloading Boot Camp support software (drivers) for Windows 10 in macOS using Boot Camp Assistant utility, the error message show:
The USB drive cannot be used. Please format the USB drive as single MS-DOS (FAT) partition with Master Record scheme.

The USB drive cannot be used. Please format the USB drive as single MS-DOS (FAT) partition with Master Record scheme.

Follow steps below to format the USB drive with FAT with the Master Boot Record scheme.

  1. Connect the USB drive to Mac.
  2. Open the Disk Utility using the search function.
  3. Click on the View button and then select Show All Devices option.Show All Devices option
  4. In the External section of the left pane, right-click on the USB drive and click the Erase option.
  5. Type a name for the USB drive, select MS-DOS (FAT) from the Format drop-down menu and then select Master Boot Record option from the Scheme drop-down menu. Click the Erase button to erase the USB drive.Type a name for the USB drive, select MS-DOS (FAT) from the Format drop-down menu, and then select Master Boot Record option from the Scheme drop-down menu.
  6. Launch the Boot Camp Assistant.