Unix/Linux Go Back    

BSD 2.11 - man page for mkfs (bsd section 8)

Linux & Unix Commands - Search Man Pages
Man Page or Keyword Search:   man
Select Man Page Set:       apropos Keyword Search (sections above)

MKFS(8) 										  MKFS(8)

       mkfs - construct a file system

       /sbin/mkfs [ -i bytes ] [ -s size ] [ -m gap ] [ -n modulus ] special

       N.B.: file systems are normally created with the newfs(8) command.

       Mkfs  constructs  a  file  system by writing on the special file special.  The size of the
       filesystem in logical blocks is specified by the -s size option.  Logical blocks are 1K (2
       sectors) under 2.11BSD.

	    NOTE:  The	newfs(8)  program's  -s option is in units of sectors.	Newfs(8) converts
	    this to filesystem (logical) blocks for mkfs(8).

       The number of inodes is calculated based on the argument bytes  to  the	-i  option.   The
       default is 4096.  If more inodes are desired in a filesystem (there is an absolute maximum
       of 65500) then a lower value for bytes should be used, perhaps 3072 or even 2048.

       The flags -m gap and -n modulus determine the block interleaving of the freelist that will
       be constructed, where gap is the distance between successive 1024-byte blocks, and modulus
       is the number of blocks before the pattern repeats, typically one cylinder.   The  optimal
       values  for  these parameters vary with the speed and geometry of the disk, as well as the
       speed of the processor.	Newfs(8) will calculate the correct values in  almost  all  cases
       from the disklabel.

       fs(5), dir(5), disklabel(8), fsck(8), mkproto(8) newfs(8)

       The  lost+found directory is created but the boot block is left uninitialized (see diskla-

3rd Berkeley Distribution		November 16, 1996				  MKFS(8)
Unix & Linux Commands & Man Pages : ©2000 - 2018 Unix and Linux Forums

All times are GMT -4. The time now is 04:46 AM.