FSCK(1) 						      General Commands Manual							   FSCK(1)

NAME

       fsck, fsck1 - perform file system consistency check

SYNOPSIS

       fsck [-aclmrs] [device] ...

OPTIONS

       -a     Automatically repair inconsistencies

       -c     Check and list only the specified i-nodes

       -l     List the files and directories in the filesytem

       -r     Prompt user for repairs if inconsistencies are found

       -s     List the superblock of the file system

EXAMPLES

       fsck /dev/hd4	   # Check file system on /dev/hd4

       fsck -a /dev/at0    # Automatically fix errors on /dev/at0

       fsck -l /dev/fd0    # List the contents of /dev/fd0

       fsck -c 2 3 /dev/hd3
			   # Check and list /dev/hd3 i-nodes 2 & 3

DESCRIPTION

       Fsck performs consistency checks on the file systems which reside on the specified devices.  Fsck1 is an alternate version for use on obso-
       lete V1 file systems.  When either the -a or -r flags are given, the file system will be repaired if errors are found.  Before running fsck
       on a mounted file system, it must first be unmounted.  Trying to repair a mounted file system is dangerous and should not be attempted.

       To  repair  the root file system (which cannot be unmounted), first type CTRL-F9 at the console to kill any and all processes.  Log back in
       as root, type sync to force any buffered changes to disk, run fsck on the root file system and immediately reboot the  computer	by  typing
       reboot.

       It  is  necessary  to kill all processes before repairing the root file system to prevent them from modifying any disk blocks while fsck is
       running.  This is only necessary for the root file system, any other file system can simply be unmounted before it is checked.

SEE ALSO

       mkfs(1), mount(1).

																	   FSCK(1)