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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 decimal	 (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.kernel.org/pub/linux/utils/util-linux/.

SEE ALSO
       blkid(8) findfs(8)

Linux				 October 2009			     WIPEFS(8)

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