There are some old DOS applications that you just can't afford to lose (or games you still like), and Windows 10 lets you keep them. Here's how.

I have a program that runs on an individual file through the command-line in DOS. However, I was wondering if there was a way (as a BATCH file or in C++) to run this command on every file in the ...

You can hold down the Ctrl key to choose DOS from the boot menu. You can run commands in Config.sys and Autoexec.bat before Windows Me starts.