sfdisk — Display or manipulate a disk partition table. More information: <https://manned.org/sfdisk>.

Back up the partition layout to a file

sudo sfdisk {{[-d|--dump]}} {{/dev/sdX}} > {{path/to/file.dump}}

Restore a partition layout

sudo sfdisk < {{path/to/file.dump}} {{/dev/sdX}}

Set the type of a partition

sudo sfdisk --part-type {{/dev/sdX}} {{partition_number}} {{swap}}

Delete a partition

sudo sfdisk --delete {{/dev/sdX}} {{partition_number}}

Display help

sfdisk {{[-h|--help]}}