>Files are linked lists of blocks. The sector header of each sector on the
>hard disk contains pointers to the previous and next blocks in the file,
>along with some other info that I've forgotten
>Files may be sparse - the fact that block n exists does not mean that
>block n-1 does
>Block 0 of each file (I think, maybe block -1) contains the 'file
>descriptor' - bascially an i-node.
>Negative block numbers are the file allocation map. You can use this to
>quickly find any block in the file without following the links.
Received on Thu Jun 26 1997 - 17:57:32 BST
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