| Sl.No. | Unit / Block | Link |
| 1 | IGNOU UNIT 01 (Operating System : An Overview) Study Material 2026 | Download |
| 2 | IGNOU UNIT 02 (Processes) Study Material 2026 | Download |
| 3 | IGNOU UNIT 03 (Interprocess Communication and Synchronization) Study Material 2026 | Download |
| 4 | IGNOU UNIT 04 (Deadlocks) Study Material 2026 | Download |
| 5 | IGNOU UNIT 01 (Memory Management) Study Material 2026 | Download |
| 6 | IGNOU UNIT 02 (Virtual Memory) Study Material 2026 | Download |
| 7 | IGNOU UNIT 03 (I/O and File Management) Study Material 2026 | Download |
| 8 | IGNOU UNIT 04 (Security and Protection) Study Material 2026 | Download |
| 9 | IGNOU UNIT 01 (Multiprocessor Systems) Study Material 2026 | Download |
| 10 | IGNOU UNIT 02 (Distributed Operating Systems) Study Material 2026 | Download |
| 11 | IGNOU UNIT 03 (Case Study - Unix) Study Material 2026 | Download |
| 12 | IGNOU UNIT 04 (Case Study: Windows 2000) Study Material 2026 | Download |