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wipefs

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-ng package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/.

SEE ALSO

blkid(8) findfs(8)