FILSYS(5)                                               FILSYS(5)

     NAME
          filsys, flblk, ino - format of file system volume

     SYNOPSIS
          #include <sys/types.h>
          #include <sys/flbk.h>
          #include <sys/filsys.h>
          #include <sys/ino.h>

     DESCRIPTION
          Every file system storage volume (e.g. RF disk, RK disk, RP
          disk, DECtape reel) has a common format for certain vital
          information.  Every such volume is divided into a certain
          number of 512-byte blocks.  Block 0 is unused and is avail-
          able to contain a bootstrap program, pack label, or other
          information.

          Block 1 is the super block. The layout of the super block as
          defined by the include file <sys/filsys.h> is: