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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 in-
       tended to salvage data from bad disks.

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

       s file
	      Use a list of bad	sectors	(counted from  beginning  of  filesys-
	      tem), 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 represen-
       tation 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 fol-
	      lowing 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/man-
       ual/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-4.0.47			    19Jan25			 mbadblocks(1)

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