PARTX(8)		     System Administration		      PARTX(8)

NAME
       partx - tell the kernel about the presence and numbering of on-disk
       partitions

SYNOPSIS
       partx [-a|-d|-P|-r|-s|-u] [-t type] [-n M:_N_] [-] disk

       partx [-a|-d|-P|-r|-s|-u] [-t type] partition [disk]

DESCRIPTION
       Given a device or disk-image, partx tries to parse the partition table
       and list its contents. It can also tell the kernel to add or remove
       partitions from its bookkeeping.

       The disk argument is optional when a partition argument is provided. To
       force scanning a partition as if it were a whole disk (for example to
       list nested subpartitions), use the argument "-" (hyphen-minus). For
       example:

	  partx --show - /dev/sda3

       This will see sda3 as a whole-disk rather than as a partition.

       partx is not an fdisk program - adding and removing partitions does not
       change the disk, it just tells the kernel about the presence and
       numbering of on-disk partitions.

OPTIONS
       -a, --add
	   Add the specified partitions, or read the disk and add all
	   partitions.

       -b, --bytes
	   Print the sizes in bytes rather than in a human-readable format.

	   By default, the unit, sizes are expressed in, is byte, and unit
	   prefixes are in power of 2^10 (1024). Abbreviations of symbols are
	   exhibited truncated in order to reach a better readability, by
	   exhibiting alone the first letter of them; examples: "1 KiB" and "1
	   MiB" are respectively exhibited as "1 K" and "1 M", then omitting
	   on purpose the mention "iB", which is part of these abbreviations.

       -d, --delete
	   Delete the specified partitions or all partitions. It is not error
	   to remove non-existing partitions, so this option is possible to
	   use together with large --nr ranges without care about the current
	   partitions set on the device.

       -g, --noheadings
	   Do not print a header line with --show or --raw.

       -l, --list
	   List the partitions. Note that all numbers are in 512-byte sectors.
	   This output format is DEPRECATED in favour of --show. Do not use it
	   in newly written scripts.

       -n, --nr M:N
	   Specify the range of partitions. For backward compatibility also
	   the format M-N is supported. The range may contain negative
	   numbers, for example --nr -1:-1 means the last partition, and --nr
	   -2:-1 means the last two partitions. Supported range specifications
	   are:

	   M
	       Specifies just one partition (e.g. --nr 3).

	   M:
	       Specifies the lower limit only (e.g. --nr 2:).

	   :N
	       Specifies the upper limit only (e.g. --nr :4).

	   M:N
	       Specifies the lower and upper limits (e.g. --nr 2:4).

       -o, --output list
	   Define the output columns to use for --show, --pairs and --raw
	   output. If no output arrangement is specified, then a default set
	   is used. Use --help to get list of all supported columns. This
	   option cannot be combined with the --add, --delete, --update or
	   --list options.

       --output-all
	   Output all available columns.

       -P, --pairs
	   List the partitions using the KEY="value" format.

       -r, --raw
	   List the partitions using the raw output format.

       -s, --show
	   List the partitions. The output columns can be selected and
	   rearranged with the --output option. All numbers (except SIZE) are
	   in 512-byte sectors.

       -t, --type type
	   Specify the partition table type.

       --list-types
	   List supported partition types and exit.

       -u, --update
	   Update the specified partitions.

       -S, --sector-size size
	   Overwrite default sector size.

       -v, --verbose
	   Verbose mode.

       -h, --help
	   Display help text and exit.

       -V, --version
	   Display version and exit.

ENVIRONMENT
       LIBBLKID_DEBUG=all
	   enables libblkid debug output.

EXAMPLE
       partx --show /dev/sdb3, partx --show --nr 3 /dev/sdb, partx --show
       /dev/sdb3 /dev/sdb
	   All three commands list partition 3 of /dev/sdb.

       partx --show - /dev/sdb3
	   Lists all subpartitions on /dev/sdb3 (the device is used as
	   whole-disk).

       partx -o START -g --nr 5 /dev/sdb
	   Prints the start sector of partition 5 on /dev/sdb without header.

       partx -o SECTORS,SIZE /dev/sda5 /dev/sda
	   Lists the length in sectors and human-readable size of partition 5
	   on /dev/sda.

       partx --add --nr 3:5 /dev/sdd
	   Adds all available partitions from 3 to 5 (inclusive) on /dev/sdd.

       partx -d --nr -1: /dev/sdd
	   Removes the last partition on /dev/sdd.

AUTHORS
       Davidlohr Bueso <dave@gnu.org>, Karel Zak <kzak@redhat.com>

       The original version was written by Andries E. Brouwer <aeb@cwi.nl>

SEE ALSO
       addpart(8), delpart(8), fdisk(8), parted(8), partprobe(8)

REPORTING BUGS
       For bug reports, use the issue tracker
       <https://github.com/util-linux/util-linux/issues>.

AVAILABILITY
       The partx command is part of the util-linux package which can be
       downloaded from Linux Kernel Archive
       <https://www.kernel.org/pub/linux/utils/util-linux/>.

util-linux 2.41.2		  2025-09-22			      PARTX(8)