Author's Comments This book is a significantly revised and expanded version of a series that originally appeared in Interface magazine, with newly written chapters added to the latter half. I believe there are very few books that explain linkers and loaders in detail. This book focuses on practical application, allowing readers to deepen their understanding by conducting various experiments and creating simple linkers (static/dynamic) and loaders themselves. The content is highly practical, providing knowledge directly applicable to real-world work. It is recommended for those interested in embedded systems, operating systems, and binary hacking. Furthermore, source code introduced in the book and additional columns that could not be included in the book can be downloaded from the support page. Please take a look.