c) Suppose a disk has 300 cylinders, numbered from 0 to 299. The drive is currently serving an I/O request at cylinder 111 and the disk head was previously serving a request at cylinder 99, and there is a queue of disk access requests for cylinders as below: 181, 199, 150, 160, 85, 178, 109, 75 Starting from the current head position, calculate the total head movements using the following disk scheduling algorithms. (i) SSTF scheduling  (ii) SCAN scheduling

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