Man page of FSCK
Section: Linux Programmer's Manual (8)
Updated: 2 July 1996
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fsck.minix - a file system consistency checker for Linux
fsck.minix [ -larvsmf ]
performs a consistency check for the Linux MINIX filesystem. The current
version supports the 14 character and 30 character filename options.
assumes the file system is quiescent.
should not be used on a mounted device unless you can be sure nobody is
writing to it (and remember that the kernel can write to it when it
searches for files).
The device will usually have the following form:
- /dev/hda[1-63] (IDE disk 1)
/dev/hdb[1-63] (IDE disk 2)
/dev/sda[1-15] (SCSI disk 1)
/dev/sdb[1-15] (SCSI disk 2)
If the file system was changed (i.e., repaired), then
will print "FILE SYSTEM HAS CHANGED" and will
three times before exiting. Since Linux does not currently have raw
devices, there is
need to reboot at this time.
be used on a mounted filesystem. Using
on a mounted filesystem is very dangerous, due to the possibility that
deleted files are still in use, and can seriously damage a perfectly good
filesystem! If you absolutely have to run
on a mounted filesystem (i.e., the root filesystem), make sure nothing is
writing to the disk, and that no files are "zombies" waiting for deletion.
Lists all filenames
Performs interactive repairs
Performs automatic repairs (this option implies
and serves to answer all of the questions asked with the default. Note
that this can be extremely dangerous in the case of extensive file system
Outputs super-block information
Activates MINIX-like "mode not cleared" warnings
Force file system check even if the file system was marked as valid (this
marking is done by the kernel when the file system is unmounted).
There are numerous diagnostic messages. The ones mentioned here are the
most commonly seen in normal usage.
If the device does not exist,
will print "unable to read super block". If the device exists, but is not
a MINIX file system,
will print "bad magic number in super-block".
The exit code returned by
is the sum of the following:
File system errors corrected, system should be rebooted if file system was
File system errors left uncorrected
Usage or syntax error
In point of fact, only 0, 3, 4, 7, 8, and 16 can ever be returned.
Linus Torvalds ([email protected])
Error code values by Rik Faith ([email protected])
Added support for file system valid flag: Dr. Wettstein
Check to prevent fsck of mounted filesystem added by Daniel Quinlan
Minix v2 fs support by Andreas Schwab
([email protected]), updated by Nicolai
Langfeldt ([email protected])
Portability patch by Russell King ([email protected]).
The fsck.minix command is part of the util-linux-ng package and is available from
- SEE ALSO
- EXIT CODES
This document was created by
using the manual pages.
Time: 04:17:50 GMT, September 24, 2010