bootOS Documentation

Welcome to the bootOS documentation! bootOS is a monolithic operating system that fits entirely within a 512-byte boot sector.

Documentation Structure

This documentation is organized into the following sections:

Getting Started

Learn how to build, install, and run bootOS on your system or emulator.

• Installation
• Building from Source
• Quick Start Guide

Architecture

Understand the internal design and organization of bootOS.

• System Overview
• Memory Layout
• Filesystem Design

API Reference

Complete reference for bootOS system interrupts and services.

• System Interrupts
• Service Calls

User Guide

Learn how to use bootOS commands and run programs.

• Commands Reference
• Creating Programs
• Available Software

About bootOS

Version: 1.0 Author: Oscar Toledo G. Created: July 2019 License: See LICENSE file

bootOS is compatible with 8088 (the original IBM PC) and provides a complete operating system environment including:

• File loading, execution, and saving
• Filesystem management (up to 32 files)
• Keyboard input and screen output services
• Support for running boot sector programs at 0000:7c00

Links

• GitHub Repository
• Author's Website
• Programming Boot Sector Games Book

Quick Example

# Build bootOS
nasm -f bin os.asm -l os.lst -o os.img

# Run with QEMU
qemu-system-x86_64 -fda os.img

Once running, try these commands:

$format
$ver
$dir

For more detailed information, explore the sections above.