fsck

Check the integrity of a filesystem or repair it. The filesystem should be unmounted at the time the command is run. More information: https://manned.org/fsck.

• 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 automatically repairing them:

sudo fsck -a {{/dev/sdXN}}