The document discusses file systems, including their objectives of storing and retrieving files, how they organize files in directories, and how they manage disk space using techniques like contiguous allocation, linked lists, and bitmaps. It also covers topics like ensuring file system reliability through consistency checks and improving performance through efficient file positioning and access. The file system implementation section describes common approaches used in Unix and Windows like inodes and directory structures.

2. File System

3. Objectives of a File System

4. User Requirements

5. Files

6. Files

7. Files

8. Directories

9. Unix; Directory and Files

10. Physical Disk Space Management

11. File System Implementation

13. Contiguous Allocation

14. Linked List Allocation

15. Linked List (DOS FAT)

16. Linked List Using an Index

17. Problems

18. Unix; i-nodes

19. i-nodes

20. Directory Implementation

21. DOS; Directory Structure

25. Unix; Directory Structure

26. Path Name Lookup

27. Shared Files

29. Keeping Track of Disk Blocks

30. Linked List of Disk Blocks

31. Bit Maps

33. File System Performance

34. File Position

35. File Position in i-node

36. File Position in Process Table

37. Solution