fdisk(8) - manipulate disk partition table
-b sectorsize
       Specify  the  sector size of the disk.  Valid values are 512, 1024, 2048 or 4096.  (Recent kernels
       know the sector size.  Use this only on old kernels or to override  the  kernel's  ideas.)   Since
       util-linux-2.17,  fdisk  differentiates  between  logical  and  physical sector size.  This option
       changes both sector sizes to sectorsize.
-c[=mode]
       Specify the compatiblity mode, 'dos' or 'nondos'.  The default  is  non-DOS  mode.   For  backward
       compatibility, it is possible to use the option without the <mode> argument -- then the default is
       used.  Note that the optional <mode> argument cannot be separated from the -c option by  a  space,
       the correct form is for example '-c=dos'.
-C cyls
       Specify the number of cylinders of the disk.  I have no idea why anybody would want to do so.
-H heads
       Specify the number of heads of the disk.  (Not the physical number, of course, but the number used
       for partition tables.)  Reasonable values are 255 and 16.
-S sects
       Specify the number of sectors per track of the disk.  (Not the physical number, of course, but the
       number used for partition tables.)  A reasonable value is 63.
-h     Print help and then exit.
-l     List the partition tables for the specified devices and then exit.  If no devices are given, those
       mentioned in /proc/partitions (if that exists) are used.
-s partition...
       Print the size (in blocks) of each given partition.
-u[=unit]
       When listing partition tables, show sizes in 'sectors' or in 'cylinders'.  The default is to  show
       sizes  in  sectors.   For  backward  compatibility,  it  is possible to use the option without the
       <units> argument -- then the default is used.  Note that the optional <unit>  argument  cannot  be
       separated from the -u option by a space, the correct form is for example '-u=cylinders'.
-v     Print version number of fdisk program and exit.