fdform man page on OPENSTEP

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FDFORM(8)							     FDFORM(8)

NAME
       fdform - Format Floppy Disk

SYNOPSIS
       fdform raw_device [ b=blocksize ] [ d=density ] [ g=gap3_length ]

DESCRIPTION
       fdform performs a full surface disk format on a floppy disk.  fdform is
       not used for SCSI floppy disks; these must be formatted with sdform(8).
       fdform  is  normally invoked by the disk(8) program when initializing a
       new floppy disk; however, it may be used	 to  re-initialize  a  damaged
       floppy.	 fdform	 should	 be used with extreme caution; all data on the
       disk being formatted is lost.

       The floppy disk is formatted one track at a time; each  track  is  read
       after  it  is  formatted.   Any	error on the read operation results in
       fdform aborting the format operation.

OPTIONS
       b=blocksize
	      blocksize is in bytes; it must  be  either  512  or  1024.   The
	      default is 512.

       d=density
	      density  is the capacity of the disk in KBytes; legal values are
	      720, 1440, and 2880.  The default value is the value intended to
	      be  used	with the floppy disk being formatted; the fd(4) driver
	      can determine this value.	 Specifying a density larger than  the
	      disk's capacity is an error.  Specifying a capacity smaller than
	      the disk's capacity is legal but is not recommended.

       g=gap3_length
	      gap3_length is the length of the write splice at the end of each
	      sector,  in  bytes.   The default is a value chosen by the fd(4)
	      driver for a particular sector size and density.

       n=num_cylinders
	      num_cylinders specifies the number of cylinders to format.   The
	      default is the entire disk.

SEE ALSO
       fd(4), disk(8)

BUGS
NeXT Computer, Inc.		August 14, 1990			     FDFORM(8)
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