prompter: I want to write a modern operating system from scratch for AMD64 systems with your assistance. I want you to guide me through the entire process by giving me detailed step-by-step instructions, writing code for me and telling me exactly where to put it while I provide you feedback. Where do I start?

assistant: Writing an operating system from scratch is a complex and challenging task, but it can also be a rewarding and educational experience. Here's an overview of the steps you could follow:

Choose a development environment: You'll need a computer and a development environment to write and test your operating system. You'll need to install a cross-compiler that can compile code for the AMD64 architecture.

Plan your operating system: Determine what features you want your operating system to have, what hardware support it will require, what other operating systems you'd like to emulate, and what resources you'll need to create it.

Create a bootloader: The bootloader is the first code that runs when your computer starts up. It sets up the system environment, initializes hardware, and transfers control to the operating system kernel.

Create a kernel: The kernel is the core of your operating system, responsible for managing system resources, scheduling processes, and providing system services. Start by implementing basic functionality like interrupt handling and process management, and then build upon it.

Implement system calls: System calls are the interface between the kernel and user-level processes. They allow user-level processes to request system services from the kernel.

Develop device drivers: Your operating system will need device drivers to communicate with hardware, such as disk controllers, network cards, and video cards. You'll need to write code that communicates with hardware in a low-level manner.

Implement a file system: A file system allows your operating system to store and retrieve data on a disk. Consider using an existing file system or creating your own custom file system.

Write user-level applications: Finally, you'll need to write applications that run on top of your operating system, such as a shell, text editor, and other utilities.

This is a high-level overview of the steps involved in writing an operating system from scratch. There are many subtasks within each step and many decisions to be made along the way. I would be happy to provide further guidance and answer any questions you have as you progress through the process.

prompter: what cross-compiler can I install? what is a development environment?

assistant: Writing an operating system from scratch can be a challenging and complex project. However, I'd be happy to guide you through the process and provide you with some resources and suggestions. Here are the steps you can follow:

1. Familiarize yourself with the hardware: Before you start writing your operating system, you need to have a good understanding of the hardware you will be working with. This includes the AMD64 architecture, the CPU and memory architecture, and the various peripheral devices that you will need to support.
2. Decide on a design and architecture: The next step is to decide on the design and architecture of your operating system. This includes deciding on the structure of the operating system, how it will manage memory and processes, how it will handle input and output, and how it will interact with the hardware.
3. Choose a development environment: You will need a development environment in which to write your operating system. This could be a combination of an operating system and a programming language, such as Linux and C, or a specialized environment like an operating system development kit.
4. Write the boot loader: The boot loader is responsible for initializing the hardware and loading the operating system into memory. You will need to write code for the boot loader, which will be responsible for initializing the hardware and loading the operating system into memory.
5. Write the kernel: The kernel is the heart of the operating system and is responsible for managing the hardware and software resources. You will need to write code for the kernel, which will handle memory management, process management, device drivers, and other tasks.
6. Develop system calls and libraries: The operating system will need to provide a set of system calls and libraries that applications can use to interact with the hardware and other system resources. You will need to write code for these system calls and libraries, making sure that they are easy to use and well-documented.
7. Develop drivers and other hardware support: Your operating system will need to support various hardware devices, such as disks, keyboards, mice, and displays. You will need to write drivers and other code to support these devices and ensure that they work correctly with your operating system.
8. Test and debug: Once you have completed the initial development of your operating system, you will need to test and debug it thoroughly. This will help you identify and fix any bugs and ensure that your operating system is stable and functional.

Writing an operating system from scratch is a complex and challenging project, but it can be a rewarding experience and a great way to learn about the inner workings of computers. If you have any questions or need help with specific parts of the process, don't hesitate to ask.

prompter: Break down each step into appropriate sub steps.