Boot Camp Assistant will automatically locate the ISO file on your USB drive.Ĭlick and drag on the partition slider to adjust how much space will be allocated to the Windows partition.īy default, 49GB will be set aside. You'll find it in the Utilities folder in Applications. Leave your ISO-carrying USB drive plugged in. How to set up Boot Camp and install Windows 10 on a Macīefore continuing with the next steps, save anything you're working on, complete a backup of your Mac, and quit all running apps.