     ,   ,  -
   .       
512 ,     .

    ,        -
. ,    ,  
" " (hardware sector)  "  "
(device block).     ,    
,   "  " (filesystem block)  "-
 -" (I/O block).       ""
(sector)  "" (block),        .
 . 13.1       .

     .    
   ,    (clusters), 
(cylinder, )   (head).    
     , ,  ,  
        . , 
     ,   ,    -
-     .   -
  ,    ,   
.

                         





   
. 13.1.     

   

     (,      -
),      ,   (buffer).  
    .    ,  
   . ,        -
,          .  
       .   
   ,    (,
       ),   
   .      (buffer
head)      struct buffer_head.

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