FCFS
Algorithm

FCFS is the simplest of all the Disk Scheduling Algorithms. In FCFS, the requests are addressed in the order they arrive in the disk queue.

SSTF
Algorithm

In SSTF (Shortest Seek Time First), requests having shortest seek time are executed first.

SCAN
Algorithm

In SCAN algorithm the disk arm moves into a particular direction and services the requests coming in its path.

CSCAN
Algorithm

The disk arm moves in a circular fashion and this algorithm is also similar to SCAN algorithm and hence it is known as C-SCAN (Circular SCAN).

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LOOK
Algorithm

Here, the disk arm in spite of going to the end of the disk goes only to the last request to be serviced in front of the head and then reverses its direction from there only.

CLOOK
Algorithm

In CLOOK, the disk arm in spite of going to the end goes only to the last request to be serviced in front of the head and then from there goes to the other end’s last request.

LIFO
Algorithm

LIFO (Last In First Out) is a method for handling data structures where the last element is processed first and the first element is processed last.

COMPARISON

ANALYSIS of all the 7 Algorithms. Let's check, which is the MOST OPTIMAL !!!