cs1101_09A_lec21 - CS1101 Lec03 1 Tracks are a series of...

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Unformatted text preview: CS1101 - Lec03 1 Tracks are a series of concentric rings on a platter Each track is broken into smaller units called sector , which can store 512 bytes (0.5 KB) Several sectors are combined to create clusters (Windows or Macs) or blocks (Unix), which is the number of sectors allocated each time a file needs space on the disk. Read/write heads on both sides platter sides Cylinder - vertical section of track through all platters; Single movement of read/write head arms accesses all platters in one cylinder. How data is stored on hard dis ks ? CS1101 - Lec03 2 File Organization Ø It is operating system to determine the precise locations where files are stored on the hard disk ² Each track and sector are labeled (numbered) ² Different OS organizes the hard disk in different manner – file system ² A cluster is the smallest space that an OS will allocate to a single file, and a cluster may...
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This note was uploaded on 03/10/2012 for the course CS 1101 taught by Professor Drxue during the Spring '11 term at City University of Hong Kong.

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cs1101_09A_lec21 - CS1101 Lec03 1 Tracks are a series of...

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