Click the 'Choose…' button and locate the ISO file. The easiest way to launch it is through Spotlight Search, which you can bring up by pressing Command and Spacebar.

All the files in the drive will be deleted, so make sure there are no important documents inside. Check if the number next to Capacity is at least 8GB. You can also check by right-clicking the USB drive on your desktop and clicking Get Info.

Make sure it's at least 8GB, which is usually marked on the USB stick. Download Windows 10 ISO Create USB installer with Boot Camp AssistantĪfter downloading the ISO file, you'll need to use Boot Camp Assistant to move it to a bootable USB drive.