ENVIRONMENT ¶ LIBBLKID_DEBUG=all enables libblkid debug output. V, -version Display version information and exit. Prefixed with 'no' to specify the types on which no action should be List Limit the set of printed or erased signatures. q, -quiet Suppress any messages after a successful signature wipe. Unsafe characters of a string to the corresponding hex value prefixed by parsable Print out in parsable instead of printable format. "K" has the same meaning as "KiB"), or the suffixes GiB, TiB, PiB, EiB, ZiB and YiB (the "iB" is optional, e.g., Multiplicative suffixes KiB (=1024), MiB (=1024*1024), and so on for The offset argument may be followed by the Prefix then the number will be interpreted as a hex value. Offset Specify the location (in bytes) of the signature which should be erasedįrom the device. n, -no-act Causes everything to be done except for the write() call. List Specify which output columns to print. It's recommended to avoid collisions with udevd or other tools. The default is not to use any lock at all, but This option overwrites environment variable If the mode argument is omitted, it defaults to The optionalĪrgument mode can be yes, no (or 1 and 0) or lock Use exclusive BSD lock for device or file it operates.
Order to erase a partition-table signature on a block device. f, -force Force erasure, even if the filesystem is mounted. b, -backup Create a signature backup to the file OPTIONS ¶ -a, -all Erase all available signatures. Note that by default wipefs does not erase nested partition In this case the wipefs scans the deviceĪgain after each modification (erase) until no magic string is found. When option -a is used, all magic strings that are visibleįor libblkid are erased. (since v2.31) lists all the offset where a magic strings have been Magic strings on the device (e.g., FAT, ZFS, GPT). Note that some filesystems and some partition tables store more This feature can be used to wipeĬontent on partitions devices as well as partition table on a disk device,įor example by wipefs -a /dev/sdc1 /dev/sdc2 /dev/sdc. Is called as the last step and when all specified signatures from all Partition-table signature to inform the kernel about the change. Wipefs calls the BLKRRPART ioctl when it has erased a output columns-list in environments where a stable output is Always explicitly define expected columns by using So whenever possible, you should avoid using default When used without any options, wipefs lists all visibleįilesystems and the offsets of their basic signatures. wipefs does not erase theįilesystem itself nor any other data from the device. Signatures (magic strings) from the specified device to make the Wipefs can erase filesystem, raid or partition-table Wipefs - wipe a signature from a device SYNOPSIS ¶
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