fsck

linuxmacos

Check the integrity of a filesystem or repair it. The filesystem should be unmounted at the time the command is run.

Examples (3)

Check filesystem `/dev/sdXN`, reporting any damaged blocks

sudo fsck /dev/sdXN

Check filesystem `/dev/sdXN`, reporting any damaged blocks and interactively letting the user choose to repair each one

sudo fsck -r /dev/sdXN

Check filesystem `/dev/sdXN`, reporting any damaged blocks and [a]utomatically repairing them

sudo fsck -a /dev/sdXN