OS From Scratch

🖥️ A custom-built operating system developed from scratch in C for x86 architecture.

This project is a fully functional educational operating system kernel implemented in C and x86 assembly. It features basic multitasking, memory management, interrupt handling, a simple shell, and device drivers. Designed for learning and extensibility, the OS demonstrates core concepts of low-level systems programming.

Features

• Paging-based memory management and dynamic kernel heap
• Interrupt Descriptor Table (IDT) and Global Descriptor Table (GDT) setup
• Custom shell with command parsing
• VGA text mode screen driver
• PS/2 keyboard driver
• Simple file system abstraction
• Bootloader and linker scripts for bare-metal execution
• Modular codebase for easy extension

Tech Stack

Getting Started

1. Clone the repository.

2. Install the cross-compiler toolchain (see cross-compiler.sh).

3. Build the kernel using:

   make

4. Run the OS in QEMU:

   make run

5. Explore the shell and features, or extend the kernel with your own modules.

Contact

📧 Feel free to reach