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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><!-- http://linux-ntfs.sourceforge.net/ntfs/concepts/file_reference.html --><html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <meta name="description" content="NTFS Documentation"> <link rel="stylesheet" type="text/css" href="../style/ntfsdoc.css"> <link rel="start" type="text/html" href="../index.html" title="NTFS Documentation"> <title>File Reference - Concept - NTFS Documentation</title> </head> <body> <table border="0" class="toolbar" summary="" cellspacing="0"> <tr> <td class="toolbar"><a accesskey="1" class="toolbar" href="../index.html">Home</a></td> <td class="toolbar"> </td> <td class="toolbar"><a accesskey="2" class="toolbar" href="../files/index.html">Files</a></td> <td class="toolbar"> </td> <td class="toolbar"><a accesskey="3" class="toolbar" href="../attributes/index.html">Attributes</a></td> <td class="toolbar"> </td> <td class="toolbar"><a accesskey="4" class="toolbar" href="../concepts/index.html">Concepts</a></td> <td class="toolbar"> </td> <td class="toolbar"><a accesskey="5" class="toolbar" href="../help/glossary.html">Glossary</a></td> <td class="toolbar"> </td> <td class="toolbar"><a accesskey="6" class="toolbar" href="../help/index.html">Help</a></td> </tr> </table> <h1>Concept - File Reference</h1> <a class="prevnext" accesskey="," href="file_record.html">Previous</a> <a class="prevnext" accesskey="." href="filename_namespace.html">Next</a> <h2>Overview</h2> <p> A unique identifier for a FILE record in the MFT. </p> <h2>Layout</h2> <table border="1" summary="" cellspacing="0"> <tr> <th class="numeric">Offset</th> <th class="numeric">Size</th> <th>Description</th> </tr> <tr> <td class="numeric">0x00</td> <td class="numeric">6</td> <td>FILE record number</td> </tr> <tr> <td class="numeric">0x06</td> <td class="numeric">2</td> <td>Sequence number</td> </tr> </table> <h2>Notes</h2> <h3>Sequence number</h3> <p>If the filesystem is consistent, this number must match the sequence number of the FILE record referenced by the FILE record number.</p> <pre> mft references (aka file references or file record segment references) are used whenever a structure needs to refer to a record in the mft. A reference consists of a 48-bit index into the mft and a 16-bit sequence number used to detect stale references. when is the seq num incremented </pre> <br> <a class="contact" href="http://linux-ntfs.sourceforge.net/ntfs/concepts/file_reference.html">Online</a> <!-- The two validators will only work if this page is visible on the web --> <a class="contact" href="http://validator.w3.org/check/referer">Validate HTML</a> <a class="contact" href="http://jigsaw.w3.org/css-validator/check/referer">Validate CSS</a> <a class="contact" href="mailto:webmaster@flatcap.org">$Id: file_reference.html,v 1.10 2001/07/11 17:09:23 flatcap Exp $</a> </body></html>
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