What is virtual box?

Virtual box is an application which can be used to operate different operating systems in the same hardware (without rebooting). You can have a number of operating systems, each running different applications.

If we want to test some applications, download and do it in virtual box.

Advantage: 

• spyware, viruses and malware don't affect the main machine
• the main would be clean

Presently, Oracle provides popular VirtualBox


Installing FreeDOS in VirtualBox.

Download FreeDOS.iso to your disk.