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ABSTRACT:Processor speed and memory size are increasing day by day several times faster than disk speed. The difference between these two identifies that disk I/O performance could become a very important factor concerning system performance. In operating systems, seek time is very crucial. Since all device I/O requests are linked in queues, if the seek time increases the system performance gets degraded. So we need certain algorithms for serving disk requests more efficiently. These algorithms are used for scheduling the various requests regarding the disks with less time and finally the system shows the better performance. In this paper we proposed a new algorithm for disk scheduling which is quite new when compared with the existing disk scheduling algorithms.

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