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Linux 2.6 - man page for wipefs (linux section 8)

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WIPEFS(8)			       MAINTENANCE COMMANDS				WIPEFS(8)

NAME
       wipefs - wipe a filesystem signature from a device

SYNOPSIS
       wipefs [-ahnp] [-o offset] device

DESCRIPTION
       wipefs  allows  to  erase filesystem or raid signatures (magic strings) from the device to
       make the filesystem invisible for libblkid.  wipefs does not erase the whole filesystem or
       any  other data from the device.  When used without options -a or -o, it lists all visible
       filesystems and offsets of their signatures.

OPTIONS
       -a, --all
	      Erase all available signatures.

       -h, --help
	      Print help and exit.

       -n, --no-act
	      Causes everything to be done except for the write() call.

       -o, --offset offset
	      Specifies location (in bytes) of the signature which  should  be	erased	from  the
	      device.  The  offset  number may include a "0x" prefix, and then the number will be
	      read as a hex value. It is possible to specify multiple -o options.

	      The offset argument may be followed by binary (2^N) suffixes KiB,  MiB,  GiB,  TiB,
	      PiB and EiB (the "iB" is optional, e.g. "K" has the same meaning as "KiB") or deci-
	      mal (10^N) suffixes KB, MB, GB, PB and EB.

       -p, --parsable
	      Print out in parsable instead of printable format. Encode  all  potentially  unsafe
	      characters of a string to the corresponding hex value prefixed by '\x'.

AUTHOR
       Karel Zak <kzak@redhat.com>.

AVAILABILITY
       The  wipefs command is part of the util-linux package and is available from ftp://ftp.ker-
       nel.org/pub/linux/utils/util-linux/.

SEE ALSO
       blkid(8) findfs(8)

Linux					   October 2009 				WIPEFS(8)
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