FSCK_APFS(8)              BSD System Manager's Manual             FSCK_APFS(8)

NAME
     fsck_apfs -- APFS consistency check

SYNOPSIS
     fsck_apfs [-q | -n | -y] [-l] device

DESCRIPTION
     The fsck_apfs utility verifies and repairs APFS containers and volumes.

     fsck_apfs checks the specified APFS containers and volumes and tries to
     repair all detected inconsistencies.

     Because of inconsistencies between the block device and the buffer cache,
     the raw device should always be used.

     In its current state, fsck_apfs checks the integrity of various container
     data structures. We do not check for overlapping allocations.

     The options are as follows:

           -l      Enable live verification mode. This makes it possible to
                   check an APFS container which is currently mounted read-
                   write, although no repairs can be made.

           -q      Causes fsck_apfs to quickly check whether the volume is
                   `clean'.

           -n      Never attempt to repair any damage that is found.

           -y      Always attempt to repair any damage that is found.

EXIT VALUES
     fsck_apfs exits 0 on success, and >0 if error occurs.

SEE ALSO
     fsck(8)

Mac OS X                       December 3, 2015                       Mac OS X