sgdisk

Show partition table

$ sgdisk -p [/dev/sda]

$ sgdisk -o [/dev/sda]

$ sgdisk -n [1:0:+500M] [/dev/sda]

$ sgdisk -t [1:8300] [/dev/sda]

$ sgdisk -d [1] [/dev/sda]

$ sgdisk -c [1:boot] [/dev/sda]

$ sgdisk -b [backup.gpt] [/dev/sda]

$ sgdisk -l [backup.gpt] [/dev/sda]

sgdisk [-n part:start:end] [-t part:type] [options] device

sgdisk is the command-line, scriptable counterpart to the interactive gdisk partitioning tool, designed for manipulating GUID Partition Table (GPT) disk layouts. It performs all operations through flags and arguments rather than an interactive menu, making it ideal for use in scripts, automated provisioning, and disk imaging workflows.
Partition creation uses flexible notation where sizes can be specified with + prefixes for relative sizing and 0 to fill remaining space. Type codes such as 8300 (Linux filesystem), EF00 (EFI System Partition), and 8200 (Linux swap) identify the purpose of each partition. Multiple operations can be chained in a single command to build complete partition layouts atomically.
The tool also supports backing up and restoring entire partition tables, converting MBR disks to GPT, and verifying table integrity. All changes are written in a single operation when the command completes successfully.

-p, --print

Print partition table.

Create new GPT.

Create partition.

Delete partition.

Set type code.

Set name.

Backup table.

Restore table.

List type codes.

Destructive operations are immediate. Wrong device destroys data. No MBR support.

sgdisk is part of GPT fdisk by Rod Smith. It provides scriptable GPT partition management.

gdisk(1), fdisk(1), parted(1)