cs1101_09A_lec21 - 1 How data is stored on hard dis ks...

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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 ?
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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
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