By "virtual optical disk file" it means an iso image – a complete copy of a cd's or dvd's contents (that is, not just the files, but also the complete structure) in other words, you created a blank vm, and now it's asking you to insert an installation disc so that you could install windows (or linux, or…) on it. Download virtual optical disk file. Daemon tools is an optical disc authoring program for microsoft windows it is completely compatible with windows operating system vista and early versions of windows 7 a virtual drive is a file representing a physical disk to an operating system.
download virtual optical disk file
