partx(8) — Linux manual page


PARTX(8)                  System Administration                 PARTX(8)

NAME         top

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

SYNOPSIS         top

       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         top

       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         top

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

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

           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:

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

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

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

               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 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 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
           Print version and exit.

ENVIRONMENT         top

           enables libblkid debug output.

EXAMPLE         top

       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

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

       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

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

AUTHORS         top

       Davidlohr Bueso <>, Karel Zak <>

       The original version was written by Andries E. Brouwer

SEE ALSO         top

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

REPORTING BUGS         top

       For bug reports, use the issue tracker at

AVAILABILITY         top

       The partx command is part of the util-linux package which can be
       downloaded from Linux Kernel Archive
       <>. This page
       is part of the util-linux (a random collection of Linux
       utilities) project. Information about the project can be found at
       ⟨⟩. If you have
       a bug report for this manual page, send it to This page was obtained from the
       project's upstream Git repository
       ⟨git://⟩ on
       2024-06-14. (At that time, the date of the most recent commit
       that was found in the repository was 2024-06-10.) If you discover
       any rendering problems in this HTML version of the page, or you
       believe there is a better or more up-to-date source for the page,
       or you have corrections or improvements to the information in
       this COLOPHON (which is not part of the original manual page),
       send a mail to

util-linux 2.39.594-1e0ad      2023-07-19                       PARTX(8)

Pages that refer to this page: addpart(8)cfdisk(8)delpart(8)fdisk(8)findfs(8)resizepart(8)sfdisk(8)