Book · 1992
Modern Operating Systems
by Andrew S. Tanenbaum
A 1,000-page walkthrough of how an operating system actually works, kept on the shelf for the week before a systems interview.
What does Reddit think of Modern Operating Systems?
Twenty-two mentions is not much of a sample, so don't expect Reddit consensus here — expect a syllabus. r/compsci lists Modern Operating Systems next to Cormen's algorithms book and Knuth, the standard trio handed to anyone asking what to read for a CS-foundations gap (↑76, ↑34). r/learnprogramming does the same thing from the student side, and has to clarify that this isn't "the book with the dinosaur on the cover" — that's Operating System Concepts, a different title entirely (↑25). The most substantive engagement is r/programming actually quoting the text, the green-threads-versus-kernel-threads passage from section 2.4.6, rather than just naming it (↑21). r/cscareerquestions treats it as interview prep, reread before every cycle and called easy to get through despite the length (↑22). Nothing displayed here argues against the book; the small sample just means silence, not agreement.
Community feedback & reader fit
Themes
- · Operating-systems fundamentals treated as interview prep, not just coursework
- · Named alongside Cormen and Knuth as the standard CS-foundations trio
- · The textbook quoted directly by section number, not just recommended by title
- · Frequently confused in shorthand with Operating System Concepts
Common praise
- + r/programming quotes an actual passage — the green-threads-versus-kernel-threads section — instead of just dropping the title (↑21).
- + r/cscareerquestions rereads it before every interview cycle and calls it easy to get through despite the size (↑22).
- + r/compsci keeps placing it next to Cormen and Knuth, two books nobody in these threads disputes (↑76, ↑34).
Common criticism
- − Twenty-two recognized mentions over seven years is a thin sample to draw any real pattern from.
- − r/learnprogramming has to specify it's not the dinosaur-cover book, which suggests it gets confused with Operating System Concepts in casual recommendations.
- − Every displayed excerpt just places it on a list; none argue for it over the other systems textbooks it's grouped with.
Who it's for
Cramming for a systems-design or OS interview question works better with this on the shelf than a Wikipedia summary — that's the r/cscareerquestions read on it (↑22). Already own Cormen and Knuth and want the operating-systems third leg? r/compsci keeps naming this as that slot. Confuse it for a second with Operating System Concepts, the one with the dinosaur, and someone in r/learnprogramming will correct you. This isn't a book Reddit argues about; it's one they file into a reading list without much drama.
Mentions over time
Which Reddit comments matter for Modern Operating Systems?
The most relevant excerpts across the subreddits where this book is mentioned — opinionated, argued takes first, then top-upvoted mentions. Click through to read the full thread.
“I am currently in the process of preparing for FAANG interviews with 4 YoE. Instead of doing side projects I simply bit the bullet and started learning these foundational technologies and concepts. I hope that my resume speaks for itself and I can impress with my strong basics. Books I can recommend…
“You should have an idea around how computers work. * Processes/Threads and Synchronisation * CPU Scheduling, context switching, preemption * Caching/Pipelining * Concurrency and locking mechanisms (eg Mutex Locks/Semaphores/Monitors) * Memory management and paging * I/O and File systems * An unders…
“- Cormen - Intro to algorithms - Knuth - The art of computer programming - Tanenbaum - Modern operating systems - P. Pacheco - Introduction to parallel programming - Kurose - Computer Networking
“Most of the concepts for what you're looking for will fall in the Operating Systems specialty of Computer Science. Some textbooks include: * (Free Online) Operating Systems: Three Easy Pieces by Remzi H. Arpaci-Dusseau and Andrea C. Arpaci-Dusseau * Operat…
“Modern Operating Systems by Tannenbaum also has a great cover it has a circus theme with bears on bicycles
“My absolute favorite OS interview refresher book is Modern Operating Systems by Tanenbaum. Incredibly easy to read, brilliant amounts of detail that goes chapter wise on each aspect. I study it before every interview cycle to refresh my memory.
“The Tanenbaum on Modern Operating Systems is a great book that can answer all your questions.
“Tanenbaum's "Modern Operating Systems" is a great read, then follow it up with his "Operating Systems Design and Implementation"
“Have a look at "Modern Operating Systems" by Tannenbaum. The good thing about the book is that it is an easy read but a book that also goes into the depths of things. It's organized very well too. And gives examples with pseudocode as well that resembles C. But the bad thing about this book is tha…
“If you’re super interested, Modern Operating Systems by Tanenbaum is worth checking out.
“Modern Operating Systems by Tanenbaum. Most coding books try to explain how to write maintainable code. None explain how to write performant solutions and what makes a performant program.
“Only textbook I've ever mostly read was Tanenbaum's Modern Operating Systems - good foundational knowledge in OS and particularly Linux will be helpful in debugging stuff and understanding how/what to build. There may be better more Linux-focused books available now. Also perhaps [
“Three CS fundamental books in the order I'd suggest someone read them if they don't have a background in CS. * Modern Operating Systems - Tanenbaum. This, or any good OS book is something that anyone writing softwar…
“Take a look at Modern Operating Systems by Andrew Tanenbaum This book covers many aspects of software-hardware interoperability, network stacks, explains how modern OS-es are implemented and why they are implemented this way This book will dramatically increase your “mechanical sympathy”
“The book that got me over the hump was was just my Java programming text book, read cover-to-cover. Any comprehensive info to programming book would likely do. I don’t even remember which one it was. Another book that really helped me was another text book, Modern Operating Systems by Tanenbaum. I…
Convinced? Pick up Modern Operating Systems
Readers also mention
Books that share discussion threads with Modern Operating Systems — counted from the comments, not curated.
Modern Operating Systems — frequently asked
Is Modern Operating Systems still useful for interview prep?+
r/cscareerquestions treats it that way directly: one commenter says it's their go-to OS interview refresher, rereading it before every cycle and calling it easy to work through given the detail it covers (↑22). Nothing in the displayed data contradicts that specific claim.
Is Modern Operating Systems the same book as the one with the dinosaur on the cover?+
No. A r/learnprogramming list of course-recommended books separates the two by name: Operating Systems in Three Easy Pieces, Operating System Concepts (the dinosaur cover), and Modern Operating Systems all appear as distinct entries (↑25). Casual recommendations sometimes blur them, hence the need to specify.
Should I read Modern Operating Systems alongside Cormen's Introduction to Algorithms?+
The pairing shows up more than once in r/compsci, where both get listed together with Knuth's The Art of Computer Programming as the core CS-foundations trio for anyone with a gap in fundamentals (↑76, ↑34). The displayed excerpts don't specify a reading order between them, just that they're treated as belonging on the same shelf.
What does Reddit actually quote from Modern Operating Systems, rather than just recommend?+
One r/programming comment cites the book's section 2.4.6 directly, on the performance difference between user-level (green) threads and kernel-level threads during a context switch, rather than just naming the title (↑21). That's the only displayed excerpt engaging with specific content instead of a list placement or a generic endorsement.