Download Windows 8.1 Preview
You can install Windows 8.1 Preview using the ISO files (.iso) that are provided on this page.
You can find additional information—including system requirements, support options, and a list of supported upgrades—in the FAQ.
How to install Windows 8.1 Preview from an ISO file
To install Windows 8.1 Preview from an ISO file, you must first convert the ISO file into installation media stored on a DVD or a USB flash...