Overview

The sanCore operating system is a lightweight, modular operating system built using C# and the COSMOS framework. Designed to deliver a fast and focused CLI experience, it runs directly on real hardware via legacy BIOS boot. With a clean architecture and open-source foundation, sanCore continues to evolve with new tools, commands, and user interface modes—making it ideal for both experimentation and educational use.

My Responsibilities

As the sole developer and architect of sanCore OS, I was responsible for designing, programming, and testing all major components of the system. This includes:

• Designing the boot sequence and memory structure using COSMOS and IL2CPU.
• Implementing a modular Command-Line Interface (CLI) with built-in system tools and utilities.
• Creating a flexible internal logging system and task manager for system monitoring.
• Ensuring BIOS compatibility and testing sanCore on both virtual machines and real hardware.
• Maintaining documentation and planning future GUI implementation using SVGAII and mouse support.

Project Details

• Framework: COSMOS
• Language: C#
• Boot Method: BIOS / Legacy
• User Interface: CLI (Text-based), with possible GUI in the future.
• Project Duration: Ongoing
• Status: Released

Research

Before starting development, I conducted extensive research into operating system architecture and low-level system programming. I studied memory management, bootloader mechanics, real-mode vs protected-mode execution, and command parsing. I analyzed open-source projects built with COSMOS and explored how custom kernels handle drivers and screen buffers. This research shaped the technical structure of sanCore and helped me make key decisions about modularity, extensibility, and long-term maintainability.

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