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zeero(8)


NAME

  zeero - Zero out disks prior to rewrite.


SYNOPSIS

  /usr/lbin/zeero [-d] [-f] device


OPTIONS

  -d  Specifies diagnostic mode.  Prints the total number of writes and the
      exit errno.  An exit status of errno 28 indicates success; zeros were
      written until the device ran out of space.

  -f  Specifies silent mode.  This option does not prompt for a response.  If
      the -f option is not used, the user is warned that all data will be
      erased from /dev/rdisk/dsk?? and asked for an affirmative response
      before continuing.


DESCRIPTION

  The zeero command writes zeros throughout a disk partition including the
  disk label.  You must be super user to use this command.


EXAMPLES

   1.  In the following example, the zeero command is used to overwrite
       partition a with zeros.
	    /usr/lbin/zeero /dev/rdisk/dsk1a

   2.  In the following example, the zeero command is used to overwrite the
       entire disk with zeros.
	    /usr/lbin/zeero /dev/rdisk/dsk0c


FILES

  /usr/lbin/zeero

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