PCs Before Windows: What Using MS-DOS Was Actually Like
 

Consumer PCs didn’t always run Windows. Before Windows arrived, PCs came with Microsoft’s MS-DOS operating system. Here’s what the command-line environment was actually like to use.

No, MS-DOS was not just like using the Linux terminal or firing up the Command Prompt in window on your fancy graphical desktop. Many things we take for granted just weren’t possible back then.

http://www.howtogeek.com/188980/pcs-...actually-like/