gparted

GParted is a free, open-source partition editor that provides a graphical interface for managing disk partitions. It is the graphical frontend for GNU Parted, and uses the Parted library to perform operations on disks.

It can create, delete, resize and move partitions; format partitions with selected filesystems; set partition flags; copy and paste partitions; and create or modify partition tables (MBR and GPT). All actions are performed via libparted, and GParted attempts to minimize risk by not mounting partitions during operations; changes are applied only when the user confirms, and an undo feature is available during a session.

GParted can be run on a running Linux system or from a bootable environment such as the GParted Live distribution. It is included in many Linux distributions and is available from standard package repositories; a dedicated bootable image is also provided for offline use.

It is released under the GNU General Public License, and its development is coordinated by the GParted team.

Most common filesystem types supported include ext2/3/4, FAT16/32, NTFS, and Linux-native formats such as XFS, Btrfs, ReiserFS, and JFS. Some formats may require additional packages on the host system.