Windows 8 Release Preview ISO files (.iso) are provided as an alternative to using Windows 8 Release Preview Setup. If you are on a PC runningWindows and want to install the release preview on another partition, another PC, or a virtual machine, we recommend you downloadWindows 8 Release Preview Setup and use the built-in tools for converting an ISO image into installation media, such as a DVD or USB bootable flash drive. You can find additional information, including a list of supported upgrades, in the FAQ.
