It is the latest experimental version of the FreeDOS™ installation program. I recommend only running it a virtual machine or on a spare test machine. NOTE: At any point that it is waiting for user input, CTRL-C will bring up a option box to Continue, Quit or Switch In/Out of Advanced Mode. If you are foolish enough to run this version on your main system, be sure to switch into advanced mode and verify all of the settings. Then cross your fingers and PRAY A LOT!!