Do not save directly to the USB Flash Drive. Save the Windows Support Software to your desktop or other location. Open Boot Camp Assistant in the Utilities folder and download the current Windows Support Software from the “Action” dropdown in the menu bar. Quit Disk Utility after this operation completes. The USB Flash drive must be formatted as exFAT. It is important to use this Mac since it will be used to identify the correct Windows drivers.
USB Flash drive (8 GB or larger recommended).It is relatively straightforward to create a bootable USB Flash drive to boot to the Windows 10 installer and open up a DOS prompt for troubleshooting. To troubleshoot an issue with Windows 10 (especially boot-related issues), it can be handy to boot into Windows 10 not installed on a Boot Camp partition.
