cfdisk

CFDISK(8)                    System Administration                   CFDISK(8)



NAME
       cfdisk - display or manipulate a disk partition table

SYNOPSIS
       cfdisk [options] [device]

DESCRIPTION
       cfdisk is a curses-based program for partitioning any block device.
       The default device is /dev/sda.

       Note that cfdisk provides basic partitioning functionality with a user-
       friendly interface.  If you need advanced features, use fdisk(8)
       instead.

       Since version 2.25 cfdisk supports MBR (DOS), GPT, SUN and SGI disk
       labels, but no longer provides any functionality for CHS (Cylinder-
       Head-Sector) addressing.  CHS has never been important for Linux, and
       this addressing concept does not make any sense for new devices.

       Since version 2.25 cfdisk also does not provide a 'print' command any
       more.  This functionality is provided by the utilities partx(8) and
       lsblk(8) in a very comfortable and rich way.

       If you want to remove an old partition table from a device, use
       wipefs(8).


OPTIONS
       -h, --help
              Display help text and exit.

       -L, --color[=when]
              Colorize the output.  The optional argument when can be auto,
              never or always.  If the when argument is omitted, it defaults
              to auto.  The colors can be disabled, for the current built-in
              default see --help output. See also the COLORS section.

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

       -z, --zero
              Start with an in-memory zeroed partition table.  This option
              does not zero the partition table on the disk; rather, it simply
              starts the program without reading the existing partition table.
              This option allows you to create a new partition table from
              scratch or from an sfdisk-compatible script.


COMMANDS
       The commands for cfdisk can be entered by pressing the corresponding
       key (pressing Enter after the command is not necessary).  Here is a
       list of the available commands:

       b      Toggle the bootable flag of the current partition.  This allows
              you to select which primary partition is bootable on the drive.
              This command may not be available for all partition label types.

       d      Delete the current partition.  This will convert the current
              partition into free space and merge it with any free space
              immediately surrounding the current partition.  A partition
              already marked as free space or marked as unusable cannot be
              deleted.

       h      Show the help screen.

       n      Create a new partition from free space.  cfdisk then prompts you
              for the size of the partition you want to create.  The default
              size is equal to the entire available free space at the current
              position.

              The size may be followed by a multiplicative suffix: KiB
              (=1024), MiB (=1024*1024), and so on for GiB, TiB, PiB, EiB, ZiB
              and YiB (the "iB" is optional, e.g. "K" has the same meaning as
              "KiB").

       q      Quit the program.  This will exit the program without writing
              any data to the disk.

       s      Sort the partitions in ascending start-sector order.  When
              deleting and adding partitions, it is likely that the numbering
              of the partitions will no longer match their order on the disk.
              This command restores that match.

       t      Change the partition type.  By default, new partitions are
              created as Linux partitions.

       u      Dump the current in-memory partition table to an sfdisk-
              compatible script file.

              The script files are compatible between cfdisk, fdisk, sfdisk
              and other libfdisk applications.  For more details see
              sfdisk(8).

              It is also possible to load an sfdisk-script into cfdisk if
              there is no partition table on the device or when you start
              cfdisk with the --zero command-line option.

       W      Write the partition table to disk (you must enter an uppercase
              W).  Since this might destroy data on the disk, you must either
              confirm or deny the write by entering `yes' or `no'.  If you
              enter `yes', cfdisk will write the partition table to disk and
              then tell the kernel to re-read the partition table from the
              disk.

              The re-reading of the partition table does not always work.  In
              such a case you need to inform the kernel about any new
              partitions by using partprobe(8) or partx(8), or by rebooting
              the system.

       x      Toggle extra information about a partition.

       Up Arrow, Down Arrow
              Move the cursor to the previous or next partition.  If there are
              more partitions than can be displayed on a screen, you can
              display the next (previous) set of partitions by moving down
              (up) at the last (first) partition displayed on the screen.

       Left Arrow, Right Arrow
              Select the preceding or the next menu item.  Hitting Enter will
              execute the currently selected item.


       All commands can be entered with either uppercase or lowercase letters
       (except for Write).  When in a submenu or at a prompt, you can hit the
       Esc key to return to the main menu.


COLORS
       Implicit coloring can be disabled by creating the empty file
       /etc/terminal-colors.d/cfdisk.disable.

       See terminal-colors.d(5) for more details about colorization
       configuration.

       cfdisk does not support color customization with a color-scheme file.


ENVIRONMENT
       CFDISK_DEBUG=all
              enables cfdisk debug output.

       LIBFDISK_DEBUG=all
              enables libfdisk debug output.

       LIBBLKID_DEBUG=all
              enables libblkid debug output.

       LIBSMARTCOLS_DEBUG=all
              enables libsmartcols debug output.

       LIBSMARTCOLS_DEBUG_PADDING=on
              use visible padding characters. Requires enabled
              LIBSMARTCOLS_DEBUG.


SEE ALSO
       fdisk(8), parted(8), partprobe(8), partx(8), sfdisk(8)

AUTHOR
       Karel Zak <kzak@redhat.com>

       The current cfdisk implementation is based on the original cfdisk from
       Kevin E. Martin (martin@cs.unc.edu).


AVAILABILITY
       The cfdisk command is part of the util-linux package and is available
       from https://www.kernel.org/pub/linux/utils/util-linux/.



util-linux                        March 2014                         CFDISK(8)