Quit Disk Utility after this operation completes.
Insert an 8GB or larger flash drive into a USB port on the Mac.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. Windows 10 Installer ISO for Windows 10Īll the preparation is done in macOS on the Mac that is having an issue booting Windows.
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.
