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 "-"
(hyphen-minus). For example:
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
partitions.
- -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
- Display help text and exit.
- -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.
- -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 negative
numbers, for example --nr :-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 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
Karel Zak
The original version was written by
Andries E. Brouwer
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