Introduction to MS-DOS
        What is MS-DOS?
        MS-DOS (Microsoft Disk Operating System) is a command-line operating system developed by Microsoft in the early 1980s. It was widely used before graphical user interfaces (GUIs) like Windows became popular.
        
        History of MS-DOS
        MS-DOS was first released in 1981 as PC-DOS for IBM computers. It was originally based on QDOS (Quick and Dirty Operating System) developed by Seattle Computer Products. Over time, Microsoft improved MS-DOS and released multiple versions until Windows took over as the dominant OS.
        
        Key Features of MS-DOS
        
            - Command-line interface (CLI) based operating system.
- Single-user, single-tasking system.
- Supports FAT file system.
- Allows direct hardware access and low-level operations.
- Lightweight and fast compared to modern operating systems.
Importance of MS-DOS
        Even though modern operating systems have replaced MS-DOS, it is still useful for learning command-line operations, troubleshooting, and running legacy software.