partx - tell the kernel about the presence and numbering of
on-disk partitions
partx
[-a|-d|-P|-r|-s|-u] [-t
type] [-n M:N] [-]
disk
partx [-a|-d|-P|-r|-s|-u]
[-t type] partition [disk]
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:
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.
- -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.