-works With Virtual Box ... | Ms Dos 6.22 .img Files

Here’s a concise, step-by-step write-up for using with VirtualBox . Running MS-DOS 6.22 in VirtualBox Using Disk Image Files Overview MS-DOS 6.22 was the last standalone version of Microsoft’s disk operating system. While VirtualBox doesn’t officially “support” DOS as a guest, it runs perfectly well using raw floppy disk images ( .img files) and a blank virtual hard drive.