Disk Commands

fsck Linux Command

Checks and optionally repairs a filesystem for errors.

What does fsck do?

Checks and optionally repairs a filesystem for errors.

fsck [options] device

sudo fsck /dev/sda1

Creates a filesystem (formats) on a disk partition.

Copies and converts raw data at the block level (disk cloning, bootable USB creation).

Unmounts a filesystem (detaches a mounted device from the directory tree).

Displays block device attributes including UUID and filesystem type.

Mounts a filesystem (attaches a device to the directory tree).

Disk partitioning tool (supports GPT and MBR partition tables).