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PARTX(8)                     System Administration                    PARTX(8)

NAME
       partx  -  tell the Linux kernel about the presence and numbering of on-
       disk partitions
SYNOPSIS
       partx [-a|-d|-s|-u] [-t TYPE] [-n M:N] [-] disk
       partx [-a|-d|-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 optionally adds or removes partitions.
       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 "-".  For example:

              partx --show - /dev/sda3
       This will see sda3 as a whole-disk rather than a partition.
       The  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 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.
       -u, --update
              Update the specified partitions.
       -g, --noheadings
              Do not print a header line.
       -h, --help
              Print a help text and exit.
       -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.
       -o, --output list
              Define  the  output  columns to use for --show 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  --add,  --delete  or  --list
              options.
       -P, --pairs
              Output using key="value" format.
       -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 means the last partition, and
              --nr -2:-1 means the last two partitions.  Supported range spec-
              ifications are:
                     M      Specifies just one partition (e.g. --nr 3).
                     M:     Specifies lower limit only (e.g. --nr 2:).
                     :N     Specifies upper limit only (e.g. --nr :4).
                     M:N or
                     M-N    Specifies lower and upper limits (e.g. --nr 2:4).
       -r, --raw
              Use the raw output format.
       -s, --show
              List  the partitions.  All numbers (except SIZE) are in 512-byte
              sectors.  The output columns can be rearranged with the --output
              option.
       -t, --type type
              Specify the partition table type aix, bsd, dos, gpt, mac, minix,
              sgi, solaris_x86, sun, ultrix or unixware.
       -v, --verbose
              Verbose mode.
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=0xffff
              enables debug output.
AVAILABILITY
       The partx command is part of the util-linux package  and  is  available
       from  Linux  Kernel Archive <ftp://ftp.kernel.org/pub/linux/utils/util-
       linux/>.

util-linux                         June 2012                          PARTX(8)