Updated: 2022/Sep/29

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FSCK_UDF(8)                 System Manager's Manual                FSCK_UDF(8)

NAME
     fsck_udf - Universal Disk Format file system consistency checker

SYNOPSIS
     fsck_udf -p [-fH] file system ...
     fsck_udf [-fHnSsy] file system ...

DESCRIPTION
     The fsck_udf utility verifies and repairs Universal Disk Format file
     systems (more commonly known as UDF file systems).

     The first form of fsck_udf preens the specified file systems.  It is
     normally started by fsck(8) run from /etc/rc during automatic reboot,
     when an UDF file system is detected.  When preening file systems,
     fsck_udf will fix common inconsistencies non-interactively.  If more
     serious problems are found, fsck_udf does not try to fix them, indicates
     that it was not successful, and exits.

     The second form of fsck_udf checks the specified file systems and tries
     to repair all detected inconsistencies, requesting confirmation before
     making any changes.

     The options are as follows:

     -f          Force detailed checking even when file system is marked
                 closed.

     -H          Enables heuristic repair options repairing known corruptions
                 in the wild caused by bugs.

     -n          Causes fsck_udf to assume no as the answer to all operator
                 questions.

     -p          Preen the specified file systems.

     -S          Causes fsck_udf to scan for older VAT tables on recordable
                 media.  This allows older snapshots of the file system on
                 recordable media to be recovered.

     -s session  Select session session to be checked on recordable media.
                 This allows older sessions of the file system on recordable
                 media to be recovered.

     -y          Causes fsck_udf to assume yes as the answer to all operator
                 questions.

SEE ALSO
     fsck(8), fsck_ffs(8), mount_udf(8)

HISTORY
     A fsck_udf utility appeared in NetBSD 10.0.

BUGS
     fsck_udf is still under construction.  Not all possible reparations are
     implemented.

NetBSD 9.99                    February 6, 2022                    NetBSD 9.99