How Are Operating Systems Written?

C is the programming language most commonly used and recommended for writing operating systems. For this reason, we are going to recommend learning and using C for OS development. However, other languages such as C++ and Python can also be used.

How do you write an operating system?

We will want to do many things with our OS:

1. Boot from scratch, without GRUB – DONE!
2. Enter 32-bit mode – DONE.
3. Jump from Assembly to C – DONE!
4. Interrupt handling – DONE!
5. Screen output and keyboard input – DONE!
6. A tiny, basic libc which grows to suit our needs – DONE!
7. Memory management.
8. Write a filesystem to store files.

How are operating systems written in C?

Hence OS is written in a language like C. Most OS uses C for its kernel, mainly Linux, Windows, Mac OS, and many others are written in C. C++, Java and other languages are used to write the higher level function of the OS. Recently the Rust Language is gaining popularity and an OS has already been written using Rust.