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Operating Systems Linux C++ Code to Access Linux Hard Disk Sectors (with a LoopBack Virtual Hard Disk) Post 302491623 by shen747 on Friday 28th of January 2011 05:49:44 AM
Old 01-28-2011
Question

Hi Corona688,

Thanks a lot for pointing that out. I've been doing some reading & now I feel going for the FAT-12(classical floppy disk) format file system would be the best idea as it was the 1st form of FAT introduced to the world & I guess therefore it would be much simpler & easier to implement. I read that in FAT-12 the Floppy Disk Drive's blocks are stored in a linked list style data structure & that there will be a root block containing the logical address of the next contiguous block of a file & that contiguous block containing the logical address of the next block on the floppy disk drive & so on. I guess I could try to implement this using a simple linked list data structure using c together with the FAT Smilie.

I'll be going through the pointers you've given me so far & getting started on this. Thank you so much for helping me get this far Smilie.

---------- Post updated 01-28-11 at 05:49 AM ---------- Previous update was 01-27-11 at 11:20 PM ----------

Hi All,

I found this explaining how to write a file to a FAT-12 file system. But I'm still finding trouble finding a basic code to get me started on this. Can anyone of you help me out here please ?.
 

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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 scan an MS-DOS floppy and mark its unused bad blocks as bad. It uses the following syntax:

       mbadblocks drive:

       Mbadblocks scans an MS-DOS floppy for bad blocks. All unused bad blocks are marked as such in the FAT. This is intended to  be  used  right
       after mformat.  It is not intended to salvage bad disks.

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-4.0.13							      28Feb10							     mbadblocks(1)
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