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tldr/pages/osx/fsck.md
2017-12-18 17:45:55 +05:30

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fsck

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/sda, reporting any damaged blocks:

fsck {{/dev/sda}}

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

fsck -f {{/dev/sda}}

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

fsck -fy {{/dev/sda}}

  • Check filesystem /dev/sda, reporting whether it has been cleanly unmounted:

fsck -q {{/dev/sda}}