# ndctl−zero−labels(1) [NAME](#name)\ [SYNOPSIS](#synopsis)\ [DESCRIPTION](#description)\ [OPTIONS](#options)\ [COPYRIGHT](#copyright)\ [SEE ALSO](#see-also) ## NAME ndctl−zero−labels − zero out the label area on a dimm or set of dimms ## SYNOPSIS *ndctl zero−labels* \ \[\..\] \[\] ## DESCRIPTION The namespace label area is a small persistent partition of capacity available on some NVDIMM devices. The label area is used to resolve aliasing between *pmem* and *blk* capacity by delineating namespace boundaries. This command resets the device to its default state by deleting all labels. ## OPTIONS One or more *nmemX* device names. The keyword *all* can be specified to operate on every dimm in the system, optionally filtered by bus id (see −−bus= option). −s, −−size= Limit the operation to the given number of bytes. A size of 0 indicates to operate over the entire label capacity. −O, −−offset= Begin the operation at the given offset into the label area. −b, −−bus= Limit operation to memory devices (dimms) that are on the given bus. Where *bus* can be a provider name or a bus id number. −v Turn on verbose debug messages in the library (if ndctl was built with logging and debug enabled). ## COPYRIGHT Copyright (c) 2016 − 2019, Intel Corporation. License GPLv2: GNU GPL version 2 . This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. ## SEE ALSO *UEFI NVDIMM Label Protocol*