C-SCAN Disk Scheduling Algorithm in Operating System - Elevator Algorithm

Learn the C-SCAN (Circular SCAN) disk scheduling algorithm, also known as the Elevator Algorithm, in this 11-minute operating system tutorial. Explore how this disk scheduling technique works by moving the disk arm in one direction until it reaches the end of the disk, then jumping back to the beginning and continuing in the same direction, creating a circular scanning pattern. Understand the advantages of C-SCAN over traditional SCAN algorithm, including more uniform wait times and better performance for requests distributed across the disk. Examine practical examples and implementations to grasp how the algorithm reduces seek time and improves overall disk performance in operating systems. Master the step-by-step execution process, analyze time complexity, and compare C-SCAN with other disk scheduling algorithms like FCFS, SSTF, and SCAN to understand when to apply this technique in real-world scenarios.