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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  num-
       bering of on-disk partitions.
OPTIONS
       -a, --add
              Add  the specified partitions, or read the disk and add all par-
              titions.
       -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  pos-
              sible  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 sec-
              tors.  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 nega-
              tive 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.
       -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.
EXAMPLES
       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.
SEE ALSO
       addpart(8), delpart(8), fdisk(8), parted(8), partprobe(8)
AUTHORS
       Davidlohr Bueso <dave AT gnu.org>
       Karel Zak <kzak AT redhat.com>
       The original version was written by Andries E. Brouwer <aeb AT cwi.nl>.
ENVIRONMENT
       LIBBLKID_DEBUG=all
              enables libblkid debug output.
AVAILABILITY
       The  partx  command  is part of the util-linux package and is available
       from Linux Kernel Archive <https://www.kernel.org/pub/linux/utils/util-
       linux/>.
util-linux                       December 2014                        PARTX(8)