mbadblocks(1)						      General Commands Manual						     mbadblocks(1)

Name
       mbadblocks - tests a floppy disk, and marks the bad blocks in the FAT

Note of warning
       This  manpage  has been automatically generated from mtools's texinfo documentation, and may not be entirely accurate or complete.  See the
       end of this man page for details.

Description
       The mbadblocks command is used to mark some clusters on an MS-DOS filesystem bad. It has the following syntax:

       mbadblocks [-s sectorlist|-c clusterlist|-w] drive:

       If no command line flags are supplied, Mbadblocks scans an MS-DOS filesystem for bad blocks by simply trying to read them and flag them	if
       read fails. All blocks that are unused are scanned, and if detected bad are marked as such in the FAT.

       This command is intended to be used right after mformat.  It is not intended to salvage data from bad disks.

Command line options
       c file
	      Use a list of bad clusters, rather than scanning for bad clusters itself.

       s file
	      Use a list of bad sectors (counted from beginning of filesystem), rather than trying for bad clusters itself.

       w      Write a random pattern to each cluster, then read it back and flag cluster as bad if mismatch. Only free clusters are tested in such
	      a way, so any file data is preserved.

Bugs
       Mbadblocks should (but doesn't yet :-( ) also try to salvage bad blocks which are in use by reading them repeatedly,  and  then	mark  them
       bad.

See Also
       Mtools' texinfo doc

Viewing the texi doc
       This  manpage  has  been automatically generated from mtools's texinfo documentation. However, this process is only approximative, and some
       items, such as crossreferences, footnotes and indices are lost in this translation process.  Indeed, these items have no appropriate repre-
       sentation  in  the manpage format.  Moreover, not all information has been translated into the manpage version.	Thus I strongly advise you
       to use the original texinfo doc.  See the end of this manpage for instructions how to view the texinfo doc.

       *      To generate a printable copy from the texinfo doc, run the following commands:

		     ./configure; make dvi; dvips mtools.dvi

       *      To generate a html copy,	run:

		     ./configure; make html

       A premade html can be found at `http://www.gnu.org/software/mtools/manual/mtools.html'

       *      To generate an info copy (browsable using emacs' info mode), run:

		     ./configure; make info

       The texinfo doc looks most pretty when printed or as html.  Indeed, in the info version certain examples are difficult to read due  to  the
       quoting conventions used in info.

mtools-4.0.18							      09Jan13							     mbadblocks(1)