DOSBox can run old DOS programs on Windows Mac and Linux. Windows Vista 64 or greater, Mac and Linux cannot run DOS programs at all, and must use a program like DOSBox to run the programs. Gamers will find that DOSBox can slow the old games down so they are playable.
Free Download
www.dosbox.com
Manual
www.dosbox.com/wiki/Basic_Setup_and_Installation_of_DosBox
Make a C> Drive
To make the situation easy for mounting the C> drive
1) Create a new sub-folder in the DOSBox folder called Programs
2) Place the programs that you want to use in the Programs sub-folder
3) When DOSBox starts, all you will need to do is type
mount c programs
4) The program folder will be mounted as C>
5) Change the drive by typing c: and you are all set to start using DOSBox
Ctrl-F11 slows down DOSBox and Ctrl-F12 speeds it up. This can be useful to gamers running old games on their system.