FILSYS(5) FILSYS(5) NAME filsys, flblk, ino - format of file system volume SYNOPSIS #include <sys/types.h> #include <sys/fblk.h> #include <sys/filsys.h> #include <sys/ino.h> DESCRIPTION Every file system is divided into a certain number of blocks of 1K or 4K bytes, as determined by the predicate BITFS() applied to the minor device number where the file system is mounted. Block 0 is unused and is available 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: