CmdID

CmdID / Commands

fsck

Check the integrity of a filesystem or repair it. tldr-pages

On Linux, macOS

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Linux

from tldr-pages, CC BY 4.0

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

Check filesystem /dev/sdXN, reporting any damaged blocks

sudo fsck /dev/sdXNIdentify

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

sudo fsck -r /dev/sdXNIdentify

Check filesystem /dev/sdXN, reporting any damaged blocks and automatically repairing them

sudo fsck -a /dev/sdXNIdentify

macOS

from tldr-pages, CC BY 4.0

Check the integrity of a filesystem or repair it. The filesystem should be unmounted at the time the command is run. It is a wrapper that calls fsck_hfs, fsck_apfs, fsck_msdos, fsck_exfat, and fsck_udf as needed.

Check filesystem /dev/sdX, reporting any damaged blocks

fsck /dev/sdXIdentify

Check filesystem /dev/sdX only if it is clean, reporting any damaged blocks and interactively letting the user choose to repair each one

fsck -f /dev/sdXIdentify

Check filesystem /dev/sdX only if it is clean, reporting any damaged blocks and automatically repairing them

fsck -fy /dev/sdXIdentify

Check filesystem /dev/sdX, reporting whether it has been cleanly unmounted

fsck -q /dev/sdXIdentify