NAME

     fdisk - partition a hard disk [IBM]


SYNOPSIS

     fdisk [-hm] [-sn] [file]


OPTIONS

     -h   Number of disk heads is m

     -s   Number of sectors per track is n


EXAMPLES

     fdisk /dev/hd0      # Examine disk partitions

     fdisk -h9 /dev/hd0  # Examine disk with 9 heads


DESCRIPTION

     When fdisk starts up, it reads in the  partition  table  and
     displays  it.   It then presents a menu to allow the user to
     modify partitions, store the partition table on a  file,  or
     load  it  from a file.  Partitions can be marked as MINIX 3,
     DOS or other, as well as active  or  not.   Using  fdisk  is
     self-explanatory.  However,  be  aware that repartitioning a
     disk will cause information on it to be lost. Rebooting  the
     system  immediately  is  mandatory  after changing partition
     sizes and parameters.  MINIX 3, XENIX, PC-IX, and MS-DOS all
     have different partition numbering schemes.  Thus when using
     multiple systems on the same disk, be careful.

     Note that MINIX 3, unlike MS-DOS , cannot  access  the  last
     sector  in  a  partition with an odd number of sectors.  The
     reason that odd partition sizes do not cause a problem  with
     MS-DOS  is that MS-DOS allocates disk space in units of 512-
     byte sectors, whereas MINIX 3 uses 1K blocks.  Fdisk  has  a
     variety of other features that can be seen by typing h.

     Fdisk normally knows the geometry of the  device  by  asking
     the  driver.   You can use the -h and -s options to override
     the numbers found.


SEE ALSO

     part(8).