Books

Mandatory Textbook

Modern Operating Systems, by Andrew S. Tanenbaum, Second Edition, Prentice Hall, 2001.

Recommended Books To Read

Operating Systems Concepts, Windows XP Update, by Abraham Silberschatz, Peter Baer Galvin, Greg Gagne, 6th Edition, John Wiley & Sons, 2003.
Operating Systems, 3/E, by Gary Nutt, Addison Wesley, 2004.
Understanding the Linux Kernel, Daniel P. Bovet, Marco Cesati, O'Reilly & Associates, 2nd edition, December 2002.
The Linux Kernel, by David Rusling. (A locally stored copy is here).

Other Reference Books

Operating Systems: Design and Implementation, by Andrew S. Tannenbaum, Albert W. Woodhull, Second Edition, Prentice Hall, 1997.
Operating Systems: Internals and Design Principles, by William Stallings, 4th Edition, Prentice Hall, 2000
The Design and Implementation of the 4.4BSD Operating System, by Marshall Kirk McKusick et al, Addison-Wesley Pub Co; Second Edition, April 30, 1996.
IA-64 Linux Kernel: Design and Implementation, by David Mosberger, Stephane Eranian, Bruce Perens, Prentice Hall PTR; 1st edition, January 30, 2002
Linux Kernel Internals, Michael Beck, Harald Bohme, Mirko Dziadzka, Ulrich Kunitz, Robert Magnus, Dirk Verworner, Harold Bohme, Addison-Wesley Pub Co; ; 2nd Book and CD-ROM edition, December 16, 1997.

Recommended Programming References

The C Programming Language, by Brian W. Kernighan and Dennis M. Ritchie, Prentice Hall PTR, 1998 (must have book for serious C programmers).
Advanced Programming in the UNIX Environment, W. Richard Stevens, Addison-Wesley, 1992.
Unix Network Programming, Volume 1, W. Richard Stevens, Networking APIs: Sockets and XTI, Second Edition, Prentice Hall PTR, 1998.
Unix Network Programming, Volume 2, W. Richard Stevens, Interprocess Communications, Second Edition, Prentice Hall PTR, 1998.
The Unix Programming Environment, by Brian Kernighan and Rob Pike, Prentice Hall Computr Books, 1984 (for the first beginners to Unix)
The Practice of Programming, by Brian Kernighan and Rob Pike, Addison Wesley, 1999.