How-To Geek shows you how to dual boot Windows and SteamOS

Valves SteamOS is a living-room gaming operating system based on desktop Linux. Its currently in beta, but you can install it yourself on almost any computer thanks to Ye Olde SteamOSe, a modification of the SteamOS installer. Important Note: We tested this ourselves, but were using an unofficial modification of a beta operating system here. Before doing this, ensure you have back ups. You do this at your own risk you could run into problems. Why We Recommend Ye Olde SteamOSe So why are we recommending Ye Olde SteamOSe, an unofficial third-party respin of the SteamOS installer rather than Valves official installer? Well, SteamOS is currently in beta although it feels more like an alpha and Valve appear to be focusing on their official Steamboxes. The official installer will eventually become the best option, but here are some current limitations Ye Olde SteamOSe solves: SteamOS requires a computer with UEFI. The unofficial respin supports both UEFI and traditional BIOS. SteamOS claims to require 500 GB of hard disk space. The unofficial respin has more realistic space requirements of about 40 GB. SteamOS only officially supports NVIDIA graphics.

  How to Dual Boot Windows and SteamOS