Suppose that a disk drive has 5000 cylinders, numbered 0 to 4999. The drive is currently
serving a request at cylinder 143, and the previous request was at cylinder 105. The
queue of pending requests in FIFO order is:
86, 1470, 913, 1774, 948, 1509, 1022, 1750, 130
Starting from the current head position, what is the total distance that the disk arm
moves to satisfy all the pending requests for each of the following disk-scheduling
algorithms?
i. FCFS
ii. SRTF
iii. SCAN
iv. C-SCAN
v. LOOK / C-LOOK
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