NDCTL-WRITE-INFOBLOCK(1) ndctl Manual NDCTL-WRITE-INFOBLOCK(1) (NAME) ndctl-write-infoblock - infoblock (SYNOPSIS) ndctl write-infoblock [ | -o | --stdout] [] (DESCRIPTION) ndctl-create-namespace(1) namespace . "sector" "fsdax" "devdax" . info-block . write-infoblock info-block "fsdax" "devdax" (image size) . namespace ( namespace ) (stdout) . (debug) infoblock infoblock . --offset --align . --offset namespace --align . (EXAMPLES) ndctl write-infoblock -s 1T -c | ndctl read-infoblock -j wrote 1 infoblock [ { "file":"", "signature":"NVDIMM_PFN_INFO", "uuid":"42e1d574-76ac-402c-9132-5436e31528c0", "parent_uuid":"ef83e49c-4c4a-4fae-b908-72e94675b1b7", "flags":0, "version":"1.4", "dataoff":17196646400, "npfns":264237056, "mode":2, "start_pad":0, "end_trunc":0, "align":16777216, "page_size":4096, "page_struct_size":64 } ] read 1 infoblock (OPTIONS) namespaceX.Y. all namespace ( --bus= ) ( --region= ) . -c, --stdout infoblock (stdout). -o, --output= infoblock ( --stdout). -m, --mode= infoblock fsdax devdax. --mode ndctl-create-namespace(1) . -s, --size= --output . --stdout . -a, --align= "align" infoblock. --mode=devdax "align" . . -u, --uuid= UUID . -M, --map= "System RAM". . ndctl-create-namespace(1) . -p, --parent-uuid= infoblock namespace (labelled) UUID namespace "parent uuid" infoblock . --output --stdout UUID namespace UUID (NULL UUID ) . -O, --offset= infoblock namespace namespace-image . / (EXPERT/DEBUG) namespace . -r, --region= regionX . () . all --region . (COPYRIGHT) Copyright (C) 2016 - 2022, Intel Corporation. License GPLv2: GNU GPL version 2 . : . . (SEE ALSO) ndctl-create-namespace(1), UEFI NVDIMM Label Protocol ndctl 2026-06-30 NDCTL-WRITE-INFOBLOCK(1)