NAME

       fsck.exfat - check an exFAT filesystem

SYNOPSIS

       fsck.exfat [ -a ] [ -n ] [ -r ] [ -v ] [ -y ] [ -b ] [ -v ] device
       fsck.exfat -V

DESCRIPTION

       fsck.exfat  checks an exFAT filesystem and repairs the filesystem depending on the options
       passed. The following corruptions can be repaired, and see the option, '-s'.

       -      Boot sector has invalid parameters. If backup boot sector  is  valid,  replace  the
              boot sector with it.

       -      Cluster is marked as free but belonged to a file, or vise versa. The bitmap for the
              cluster is marked properly.

       -      File size is abnormally large considering  the  count  of  clusters.  The  size  is
              changed.

       -      File  size  is  abnormally  small  considering the count of clusters. The remaining
              clusters are deleted.

       -      File's cluster chain has an invalid cluster number. The number are changed to  EOF,
              and the file size is also changed.

       -      File's cluster chain contains a loop. The loop is broken.

       -      Files share the same cluster.  Cluster chains for files except one are broken.

       -      Start cluster number is invalid. The cluster number and file size are changed to 0.

       -      Checksum value of directory entry set is invalid. Directory entry set is deleted.

       -      Bad hash value of a file name. The hash value is changed properly.

       -      Fields of directory entry set have invalid values. Directory entry set is deleted.

OPTIONS

       -a     This   option  does  the same thing as the -p option.  It is provided for backwards
              compatibility only;   it   is   suggested   that  people  use  -p  option  whenever
              possible.

       -n     Check the filesystem but do not attempt to repair the filesystem.

       -p     Repair the filesystem without user interaction if it can be done safely.

       -r     Repair the filesystem interactively.

       -s     Create  files  in  /LOST+FOUND  for  orphan  clusters.  These  files  have clusters
              allocated but not belonged to any files  when  reparing  the  filesystem.  clusters
              unused and contiguous in bitmap are allocated to the same file.

       -v     Prints verbose debugging information while checking the exFAT filesystem.

       -V     Prints the version number and exits.

       -y     Repair the filesystem answering yes to all questions.

       -b     Try to repair the filesystem even if the exFAT filesystem is not found.

EXAMPLES

       repair  a  corrupted device and create files in /LOST+FOUND, which have clusters allocated
       but not belonged to any files when reparing the device.
       $ fsck.exfat -p -s /dev/sda1

SEE ALSO

       fsck(8), fstab(5),

                                                                                    fsck.exfat(8)