Operating System Concepts, now in its ninth edition, continues to provide a solid theoretical foundation for understanding operating systems. The ninth edition has been updated to include contemporary examples of how operating systems function. Case studies have been updated include current versions of Linux and Windows 7. The use of simulators and operating system emulators is incorporated to allow operating system operation demonstrations and full programming projects. The text includes content to bridge the gap between concepts and actual implementations. The end-of-chapter problems, exercises, review questions, and programming exercises help to further reinforce important concepts.