osf1 man page for zeero

zeero(8)						      System Manager's Manual							  zeero(8)

NAME
       zeero - Zero out disks prior to rewrite.

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

OPTIONS
       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.  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
       In the following example, the zeero command is used to overwrite partition a with zeros.  /usr/lbin/zeero /dev/rdisk/dsk1a In the following
       example, the zeero command is used to overwrite the entire disk with zeros.  /usr/lbin/zeero /dev/rdisk/dsk0c

FILES
																	  zeero(8)