Bootstrap yourself to write an OS from scratch. A book for self-learner. This book helps you gain the foundational knowledge required to write an operating system from scratch. The book does not try to teach you everything, but enough to enable you to learn by yourself. The book teaches you core concepts, such as x86 Assembly, ELF, linking and debugging on bare metal, etc., but more importantly, where such information come from. It discusses design trade-offs and the practical decisions affecting design, performance and security.

The book illustrates and reinforces design concepts and ties them to real-world design choices through the use of case studies in Linux, UNIX.