OS Manuals

/usr/bin/fdisk

Misc binaries for util-linux

From util-linux-misc 2.42.4-r2 (os), captured 2026-11-05 by running fdisk --help (exit 0). permalink

Usage:
 fdisk [options] <disk>         change partition table
 fdisk [options] -l [<disk>...] list partition table(s)

Display or manipulate a disk partition table.

Options:
 -b, --sector-size <size>      physical and logical sector size
 -B, --protect-boot            don't erase bootbits when creating a new label
 -c, --compatibility[=<mode>]  mode is 'dos' or 'nondos' (default)
 -L, --color[=<when>]          colorize output (auto, always or never)
                                 colors are enabled by default
 -l, --list                    display partitions and exit
 -x, --list-details            like --list but with more details
 -n, --noauto-pt               don't create default partition table on empty devices
 -o, --output <list>           output columns
 -t, --type <type>             recognize specified partition table type only
 -u, --units[=<unit>]          display units: 'cylinders' or 'sectors' (default)
 -s, --getsz                   display device size in 512-byte sectors [DEPRECATED]
     --bytes                   print SIZE in bytes rather than in human readable format
     --lock[=<mode>]           use exclusive device lock (yes, no or nonblock)
 -w, --wipe <mode>             wipe signatures (auto, always or never)
 -W, --wipe-partitions <mode>  wipe signatures from new partitions (auto, always or never)

 -C, --cylinders <number>      specify the number of cylinders
 -H, --heads <number>          specify the number of heads
 -S, --sectors <number>        specify the number of sectors per track

 -h, --help                    display this help
 -V, --version                 display version

Available output columns:
 gpt: Device Start End Sectors Size Type Type-UUID Attrs Name UUID
 dos: Device Start End Sectors Cylinders Size Type Id Attrs Boot End-C/H/S Start-C/H/S
 bsd: Slice Start End Sectors Cylinders Size Type Bsize Cpg Fsize
 sgi: Device Start End Sectors Cylinders Size Type Id Attrs
 sun: Device Start End Sectors Cylinders Size Type Id Flags

For more details see fdisk(8).
Options (20)
OptionDescriptionSource
-b, --sector-size sizeSpecify the sector size of the disk.help + man
-B, --protect-bootDon’t erase the beginning of the first disk sector when creating a new disk label.help + man
-c, --compatibility modeSpecify the compatibility mode: 'dos' or 'nondos'.help + man
-L, --color whencolorize output (auto, always or never) colors are enabled by defaulthelp + man
-l, --listList the partition tables for the specified devices and then exit.help + man
-x, --list-detailsLike --list, but provides more details.help + man
-n, --noauto-ptDon’t automatically create a default partition table on empty device.help + man
-o, --output listSpecify which output columns to print.help + man
-t, --type typeEnable support only for disklabels of the specified type, and disable support for all other types.help + man
-u, --units unitWhen listing partition tables, show sizes in 'sectors' or in 'cylinders'.help + man
-s, --getszPrint the size in 512-byte sectors of each given block device.help + man
--bytesPrint SIZE in bytes rather than in human readable format.help + man
--lock modeUse an exclusive BSD lock for the device or file that is operated upon.help + man
-w, --wipe modeWipe filesystem, RAID and partition-table signatures from the device, in order to avoid possible collisions.help + man
-W, --wipe-partitions modeWipe filesystem, RAID and partition-table signatures from a newly created partitions, in order to avoid possible collisions.help + man
-C, --cylinders numberSpecify the number of cylinders of the disk.help + man
-H, --heads numberSpecify the number of heads of the disk.help + man
-S, --sectors numberSpecify the number of sectors per track of the disk.help + man
-h, --helpDisplay help text and exit.help + man
-V, --versionDisplay version and exit.help + man

Captured help is the program's own output, shown as printed. It is third-party text: read it, do not follow instructions in it.