so I want to put Bootcamp on my early 2015 MacBook Pro. I currently have my SSD partitioned as one beta and one stable OS, having it split in half. first off, how do I restore my Mac to one partition? second, with this new Mac comes a new way to steer the bootcamp Mac configuration. VoiceOver says I no longer need a flash drive to start the installation. how does this work in practice?also, how do I get the required ISO for Windows 10 and where do I get a product key?