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     fsck_pcfs - file system consistency  check  and  interactive

     fsck -F pcfs [generic_options] special

     fsck -F pcfs [generic_options] [-o specific_options] special

     The fsck utility audits  and  interactively  repairs  incon-
     sistent  conditions  on file systems. special represents the
     character special device on which the file  system  resides,
     for  example  /dev/rdiskette.  The character special device,
     not the block special device, should be used.

     In  the  case  of  correcting  serious  inconsistencies,  by
     default,  fsck  asks for confirmation before making a repair
     and waits for the operator to respond either yes or  no.  If
     the operator does not have write permission on the file sys-
     tem, fsck defaults to a  -n  (no  corrections)  action.  See

     Repairing some file system  inconsistencies  may  result  in
     loss  of  data.  The amount and severity of data loss may be
     determined from the diagnostic output.

     When executed with  the  verify  option  (-o  v),  fsck_pcfs
     automatically  scans  the  entire file system to verify that
     all of its allocation units are accessible. If it finds  any
     units  inaccessible,  it  updates  the file allocation table
     (FAT) appropriately. It also updates any effected  directory
     entries  to  reflect  the  problem.  This  directory  update
     includes truncating the file at the point in its  allocation
     chain  where  the  file  data  is  no longer accessible. Any
     remaining accessible allocation units become orphaned.

     Orphaned chains of accessible allocation units are, with the
     operator's  concurrence, linked back into the file system as
     files in the root directory. These files are assigned  names
     of  the  form  fileNNNN.chk,  where the Ns are digits in the
     integral range from 0 through 9.

     After successfully scanning and correcting any errors in the
     file  system,  fsck  displays a summary of information about
     the file system. This summary includes the size of the  file
     system in bytes, the number of bytes used in directories and
     individual files, and the  number  of  available  allocation
     units remaining in the file system.


     generic_options         The following  generic  options  are

                             -m              Check  but  do   not
                                             repair.  This option
                                             checks that the file
                                             system  is  suitable
                                             for        mounting,
                                             returning        the
                                             appropriate     exit
                                             status.  If the file
                                             system is ready  for
                                             mounting,       fsck
                                             displays  a  message
                                             such as:

                                             pcfs fsck: sanity check:
                                             /dev/rdiskette okay

                             -n | -N          Assume     a     no
                                             response   to    all
                                             questions  asked  by
                                             fsck;  do  not  open
                                             the file system  for

                             -V              Echo  the   expanded
                                             command line, but do
                                             not   execute    the
                                             command. This option
                                             may be used to  ver-
                                             ify and  to validate
                                             the command line.

                             -y | -Y         Assume     a     yes
                                             response    to   all
                                             questions  asked  by

     -o specific_options     Specify pcfs  file  system  specific
                             options  in  a comma-separated list,
                             in any combination, with  no  inter-
                             vening spaces.

                             v        Verify all allocation units
                                      are   accessible  prior  to
                                      correcting  inconsistencies
                                      in the metadata.

                             p        Check and fix the file sys-
                                      tem       non-interactively
                                      (preen).  Exit  immediately
                                      if   there   is  a  problem
                                      requiring intervention.

                             w        Check writable file systems

     special                 The device which contains the  pcfs.
                             The  device  name  for a diskette is
                             specified as /dev/rdiskette0 for the
                             first     diskette     drive,     or
                             /dev/rdiskette1   for    a    second
                             diskette  drive.  A hard disk device
                             or  high-capacity  removable  device
                             name much be qualified with a suffix
                             to indicate the proper FDISK  parti-

                             For   example,   in    the    names:
                             /dev/rdsk/c0t0d0p0:c             and
                             /dev/rdsk/c0t4d0s2:c, the :c  suffix
                             indicates the first partition on the
                             disk contains the pcfs.

     See attributes(5) for descriptions of the  following  attri-

    | ATTRIBUTE TYPE              | ATTRIBUTE VALUE             |
    | Availability                | SUNWesu                     |
    | Interface Stability         | Stable                      |

     fsck(1M),  fstyp(1M),  fdisk(1M),  mkfs(1M),  mkfs_pcfs(1M),
     mountall(1M), attributes(5), pcfs(7FS),

     The operating system buffers file system data. Running  fsck
     on  a  mounted  file system can cause the operating system's
     buffers to become out of date with respect to the disk.  For
     this  reason,  the file system should be unmounted when fsck
     is used. If this is not possible, care should be taken  that
     the  system is quiescent and that it is rebooted immediately
     after fsck is run. Quite often, however, this is not  suffi-
     cient. A panic will probably occur if running fsck on a file
     system modifies the file system.

Man pages from Solaris 10 Update 8. See docs.sun.com and www.oracle.com for further documentation and Solaris information.