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 SIZE column in bytes rather than in human-readable format.

       -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.

       -V, --version
           Display version information and exit.

       -h, --help
           Display help text 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 at https://github.com/karelzak/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/>.