Operating Systems Notes by Jinzhong Niu
This note explains the following topics: Computer system, Hardware basics, Nachos overview, Process concept and state, Process description and control, Threads, Concurrency: Mutual Exclusion and Synchronization, Concurrency: Mutual Exclusion and Synchronization, Concurrency: Mutual Exclusion and Synchronization, Concurrency: Deadlock and Starvation, Memory Management, Virtual Memory, Virual Memory, Uniprocessor Scheduling, I/O Management.
Author(s): Jinzhong Niu
NA Pages 
xv6 a simple Unix like teaching operating system
This book contains below topics, Operating system interfaces, Operating system organization, Page tables, Traps and system calls, Page faults, Interrupts and device drivers, Locks, Scheduling, Sleep and wakeup, File system.
Author(s): Russ Cox, Frans Kaashoek, and Robert Morris, MIT CSAIL
116 Pages
Lecture Notes On Operating System by Sandeep
This note covers the following topics, Functions of Operating System, Evolution of OS, Operating System Services, ComputerSystem Architecture, Process Control Block, CPU Scheduling, Thread, Interprocess Communication, MessagePassing System, Process Synchronization, Petersons solution, Synchronization Hardware, Semaphores, The ReadersWriters Problem.
Author(s): A.Sandeep
92 Pages
