Writing an operating system from scratch is a challenging and time-consuming task, but a rewarding one. If you're serious about it, you'll need a good understanding of low-level programming, computer architecture, and operating system concepts. Here are the steps you can follow to get started:

Study the basics: Before diving into writing an operating system, you need to have a solid understanding of computer systems and operating systems concepts. You can start by reading introductory texts like "Operating System Concepts" by Abraham Silberschatz and studying books on low-level programming and computer architecture.

Choose a development environment: For writing the operating system, you'll need a suitable development environment. You can use either a physical computer or a virtual machine for this purpose. For the development environment, you should install an x86_64 architecture-based system, such as a recent version of Linux or BSD, and make sure you have a suitable cross-compiler toolchain for the target architecture.

Decide on a boot loader: To boot the operating system, you'll need a boot loader. The boot loader is responsible for loading the operating system into memory and starting its execution. You can use popular boot loaders like GRUB or write your own boot loader.

Design the system architecture: Now that you have a development environment and a boot loader, you can start designing the system architecture. This includes deciding on the structure of the file system, the system calls, and the overall design of the operating system.

Write the kernel: The next step is to write the kernel, which is the core of the operating system. You can start by implementing basic functionality like memory management, process management, and I/O.

Implement system calls: System calls provide a means for user-level programs to interact with the kernel. You'll need to implement system calls for basic functionality such as reading from and writing to files, creating and killing processes, and allocating memory.

Develop device drivers: The operating system needs to support various hardware devices. You'll need to write device drivers for the hardware you want to support.

Test and debug: Once you have a working kernel and device drivers, you can start testing and debugging the system.

I hope this gives you a general idea of the steps involved in writing an operating system. I'm here to help you with any questions or problems you may have along the way. Let me know how I can assist you further!
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