Choosing the Right Programming Language for Building an OS Similar to Windows 95

If you're passionate about creating an operating system akin to Windows 95, you'll need to carefully consider the programming languages and tools at your disposal. This guide will help you understand the necessary technical requirements and language choices for such a monumental task.

Understanding the Differences Between Components

It's important to clarify that there is no such thing as an OS called "Windows DOS". DOS was a separate operating system that preceded the Windows operating system. Over time, different versions of Windows were built on top of various OS foundations. For instance, Windows 95 was built on top of MS-DOS (Microsoft Disk Operating System).

Complexity and Team Work

Developing an operating system like Windows 95 is a highly complex endeavor that requires a team of developers. It involves a vast amount of code, typically in the range of tens of millions of lines, which makes it impractical for a single person to undertake alone in one lifetime.

Key Programming Languages

To start, you would need at least one language that allows for fast direct hardware access, such as C or Rust. These languages are crucial for writing drivers and for handling time-critical functions. In modern times, C may also be an option due to its performance capabilities and library support.

Specialized Skills for Embedded Systems

If your goal is to create a small, embedded operating system, the task becomes much more feasible, provided you have the necessary hardware and skills. In this case, C remains a prime choice due to its efficiency and control over the microcontroller. The limits on memory and processor power in embedded systems make C a more viable option.

Learning Assembly Language

For those who are particularly interested in the inner workings of Windows 95, knowledge of assembly language is highly beneficial. Assembly language is the low-level language that directly corresponds to the hardware. You can explore the original MS-DOS 1.25 and 2.0 source code available on GitHub, which can provide valuable insights into the development process.

Studying the Linux Kernel

A pragmatic approach to building an OS involves gaining familiarity with the Linux kernel source code. This extensive codebase, with over 22,000 contributors and 800,000 commits, can serve as a robust foundation for learning and implementing an OS. You can access it through the following link:

Conclusion

Building an operating system like Windows 95 is an ambitious project that demands significant knowledge, resources, and expertise. The choice of programming language and your approach to the project will play critical roles in its success. Whether you opt for C, C , or even Rust, ensure that you have a solid foundation in assembly language and are familiar with the Linux kernel. With dedication and hard work, you could contribute to the rich landscape of operating system development.