That's mandatory if you want to set up a dual-boot installation, for example.įor the Insider Preview, Microsoft makes an ISO available for download with every Slow ring release. Having that installer image available gives you access to some installation and repair options that you don't have otherwise, such as the option to create bootable media. If you are old school, you want an ISO because installing Windows on bare metal is just what one does, period. Review: Goodbye, Windows 8 hello, Windows 10īut a lot of my readers want traditional installer files, either on a DVD or in an ISO image file that is the equivalent of a DVD.FAQ: You've got questions, Ed Bott's got answers.Microsoft: More than 75 million devices.