The book "Operating Systems and System Programming" by H. A. Disruption is a fascinating and deep dive into the world of computer technology, which will become an indispensable tool for both students and professionals in the field of information technology. This work stands out from other textbooks due to its accessible style of presentation and extensive coverage of topics related to operating systems and system programming. In the book, the author consistently reveals the main concepts related to the architecture of operating systems, their functions and principles of operation. The reader will get acquainted with such important aspects as process management, memory, file systems and input-output devices. Razoranov not only lists facts and theories, but immerses the reader in practical examples, which makes the material more understandable and applicable in real practice. This is especially important for those who want not only to learn the theory, but also to learn how to apply the knowledge gained in practice. The book will be of interest to a wide range of readers: from students of technical universities studying computer science and programming, to experienced developers who want to refresh their knowledge or understand new aspects of system programming. If you are passionate about creating software, developing applications or just want to understand how operating systems work, this publication will be a real find for you. The topics raised in the book cover not only technical aspects, but also philosophical issues related to the development of technology. The gap covers such important topics as operating system security, efficient resource management, and software interaction with the computer hardware. These issues are becoming increasingly relevant in today's world, where cyber threats and the need to optimize the operation of systems are in the first place. The author’s style is distinguished by clarity and logical presentation . Razorov uses a variety of illustrations and diagrams, which helps the reader to more easily assimilate complex concepts. His approach to learning is based on the principle of “from simple to complex”, which makes the book accessible to understanding even by those who are just starting their way in programming. In addition, the author actively uses examples from real practice, which allows the reader to see how theoretical knowledge is applied in life. N. A. Razoranov is not the only author who explores the topic of operating systems. His work can be compared to the works of such famous authors as Andrew Tanenbaum and David Patterson, who also made a significant contribution to this field. However, the uniqueness of Razoranov lies in his ability to explain complex things in simple language, which makes his book especially valuable for beginners. If you are looking for a tutorial that not only teaches, but also inspires, “Operating Systems and System Programming” will be an excellent choice. This book will not only expand your knowledge, but also help you become more confident in your abilities in the world of high technology. Do not miss the opportunity to learn more about how operating systems work and how you can use this knowledge to create your own programs and applications.