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📄 数据恢复之fat篇.htm

📁 Fat32文件系统原理,适合于出学者
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<FONT face=黑体>&nbsp;<B><A name=索引><FONT size=5></FONT></A><FONT 
size=5>FAT文件系统原理<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
</FONT><I><FONT size=4>——</FONT><A href="http://www.sjhf.net/"><FONT 
size=4>http://www.sjhf.net</FONT></A> </I></B></FONT></P>
<TABLE id=table31 
style="PADDING-RIGHT: 4px; PADDING-LEFT: 4px; BORDER-LEFT-COLOR: #000000; BORDER-BOTTOM-COLOR: #000000; PADDING-BOTTOM: 1px; BORDER-TOP-STYLE: solid; BORDER-TOP-COLOR: #000000; PADDING-TOP: 1px; BORDER-RIGHT-STYLE: solid; BORDER-LEFT-STYLE: solid; BORDER-COLLAPSE: collapse; BORDER-RIGHT-COLOR: #000000; BORDER-BOTTOM-STYLE: solid" 
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  <TBODY>
  <TR>
    <TD 
    style="BORDER-RIGHT: 1px solid; PADDING-RIGHT: 4px; BORDER-TOP: 1px solid; PADDING-LEFT: 4px; PADDING-BOTTOM: 1px; BORDER-LEFT: 1px solid; PADDING-TOP: 1px; BORDER-BOTTOM: 1px solid" 
    align=left colSpan=3 rowSpan=2>
      <P style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px"><B><FONT 
      size=3>文本结构索引：</FONT></B></P></TD>
    <TD 
    style="BORDER-RIGHT: 2px solid; PADDING-RIGHT: 4px; BORDER-TOP: 2px solid; PADDING-LEFT: 4px; PADDING-BOTTOM: 1px; BORDER-LEFT: 2px solid; PADDING-TOP: 1px; BORDER-BOTTOM: 2px solid" 
    align=left width=21 rowSpan=14>
      <P style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px">　</P></TD>
    <TD 
    style="BORDER-RIGHT: 1px solid; BORDER-TOP: 1px solid; BORDER-LEFT: 1px solid; BORDER-BOTTOM: 1px solid" 
    align=left width=197 rowSpan=2>
      <P style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px"><B><FONT 
      size=3>图片表格索引：</FONT></B></P></TD>
    <TD 
    style="BORDER-RIGHT: 1px solid; BORDER-TOP: 1px solid; BORDER-LEFT: 1px solid; BORDER-BOTTOM: 1px solid" 
    align=left width=179><A 
      href="http://www.sjhf.net/document/fat/#表1 分区表参数">表1 分区表参数</A></TD></TR>
  <TR>
    <TD 
    style="BORDER-RIGHT: 1px solid; BORDER-TOP: 1px solid; BORDER-LEFT: 1px solid; BORDER-BOTTOM: 1px solid" 
    align=left width=179><A 
      href="http://www.sjhf.net/document/fat/#表2 扩展分区表项的内容">表2 
  扩展分区表项的内容</A></TD></TR>
  <TR>
    <TD 
    style="BORDER-RIGHT: #000000 2px ridge; PADDING-RIGHT: 4px; BORDER-TOP: #000000 2px ridge; PADDING-LEFT: 4px; PADDING-BOTTOM: 1px; BORDER-LEFT: #000000 2px ridge; PADDING-TOP: 1px; BORDER-BOTTOM: #000000 2px ridge" 
    width=280 colSpan=3><A 
      href="http://www.sjhf.net/document/fat/#一、硬盘的物理结构">一、硬盘的物理结构</A></TD>
    <TD 
    style="BORDER-RIGHT: 1px solid; BORDER-TOP: 1px solid; BORDER-LEFT: 1px solid; BORDER-BOTTOM: 1px solid" 
    align=left width=197><A 
      href="http://www.sjhf.net/document/fat/#图1 硬盘内部机械图。">图1 硬盘的物理结构</A></TD>
    <TD 
    style="BORDER-RIGHT: 1px solid; BORDER-TOP: 1px solid; BORDER-LEFT: 1px solid; BORDER-BOTTOM: 1px solid" 
    align=left width=179 height=22><A 
      href="http://www.sjhf.net/document/fat/#表3   FAT32分区上DBR中各部分的位置划分">表3 
      FAT32分区DBR的位置划分</A></TD></TR>
  <TR>
    <TD 
    style="BORDER-RIGHT: #000000 2px ridge; PADDING-RIGHT: 4px; BORDER-TOP: #000000 2px ridge; PADDING-LEFT: 4px; PADDING-BOTTOM: 1px; BORDER-LEFT: #000000 2px ridge; PADDING-TOP: 1px; BORDER-BOTTOM: #000000 2px ridge" 
    width=280 colSpan=3><A 
      href="http://www.sjhf.net/document/fat/#二、硬盘的逻辑结构">二、硬盘的逻辑结构</A></TD>
    <TD 
    style="BORDER-RIGHT: 1px solid; BORDER-TOP: 1px solid; BORDER-LEFT: 1px solid; BORDER-BOTTOM: 1px solid" 
    align=left width=197 height=22><A 
      href="http://www.sjhf.net/document/fat/#图2winhex 磁盘的MBR">图2 
      winhex下的磁盘MBR</A></TD>
    <TD 
    style="BORDER-RIGHT: 1px solid; BORDER-TOP: 1px solid; BORDER-LEFT: 1px solid; BORDER-BOTTOM: 1px solid" 
    align=left width=179><A 
      href="http://www.sjhf.net/document/fat/#表4 FAT32分区的BPB字段">表4 
      FAT32分区的BPB字段</A></TD></TR>
  <TR>
    <TD 
    style="BORDER-RIGHT: #000000 2px ridge; PADDING-RIGHT: 4px; BORDER-TOP: #000000 2px ridge; PADDING-LEFT: 4px; PADDING-BOTTOM: 1px; BORDER-LEFT: #000000 2px ridge; PADDING-TOP: 1px; BORDER-BOTTOM: #000000 2px ridge" 
    width=70 rowSpan=2><A 
      href="http://www.sjhf.net/document/fat/#三、磁盘引导原理">三、磁盘引导原理</A></TD>
    <TD 
    style="BORDER-RIGHT: #000000 2px ridge; PADDING-RIGHT: 4px; BORDER-TOP: #000000 2px ridge; PADDING-LEFT: 4px; PADDING-BOTTOM: 1px; BORDER-LEFT: #000000 2px ridge; PADDING-TOP: 1px; BORDER-BOTTOM: #000000 2px ridge" 
    width=80 height=22><A 
      href="http://www.sjhf.net/document/fat/#3.1 MBR（master boot record）扇区">3.1 
      MBR扇区</A></TD>
    <TD 
    style="BORDER-RIGHT: #000000 2px ridge; PADDING-RIGHT: 4px; BORDER-TOP: #000000 2px ridge; PADDING-LEFT: 4px; PADDING-BOTTOM: 1px; BORDER-LEFT: #000000 2px ridge; PADDING-TOP: 1px; BORDER-BOTTOM: #000000 2px ridge" 
    width=114 height=22>　</TD>
    <TD 
    style="BORDER-RIGHT: 1px solid; BORDER-TOP: 1px solid; BORDER-LEFT: 1px solid; BORDER-BOTTOM: 1px solid" 
    align=left width=197><A 
      href="http://www.sjhf.net/document/fat/#图3 winhex所给出的MBR参数的意义。">图3 
      winhex给出的MBR参数的意义</A></TD>
    <TD 
    style="BORDER-RIGHT: 1px solid; BORDER-TOP: 1px solid; BORDER-LEFT: 1px solid; BORDER-BOTTOM: 1px solid" 
    align=left width=179><A 
      href="http://www.sjhf.net/document/fat/#表5   FAT32分区的扩展BPB字段">表5 
      FAT32分区的扩展BPB字段</A></TD></TR>
  <TR>
    <TD 
    style="BORDER-RIGHT: #000000 2px ridge; PADDING-RIGHT: 4px; BORDER-TOP: #000000 2px ridge; PADDING-LEFT: 4px; PADDING-BOTTOM: 1px; BORDER-LEFT: #000000 2px ridge; PADDING-TOP: 1px; BORDER-BOTTOM: #000000 2px ridge" 
    width=80><A href="http://www.sjhf.net/document/fat/#3.2 扩展分区">3.2 
    扩展分区</A></TD>
    <TD 
    style="BORDER-RIGHT: #000000 2px ridge; PADDING-RIGHT: 4px; BORDER-TOP: #000000 2px ridge; PADDING-LEFT: 4px; PADDING-BOTTOM: 1px; BORDER-LEFT: #000000 2px ridge; PADDING-TOP: 1px; BORDER-BOTTOM: #000000 2px ridge" 
    width=114>　</TD>
    <TD 
    style="BORDER-RIGHT: 1px solid; BORDER-TOP: 1px solid; BORDER-LEFT: 1px solid; BORDER-BOTTOM: 1px solid" 
    align=left width=197><A 
      href="http://www.sjhf.net/document/fat/#图4 分区表类型标志。">图4 分区表类型标志</A></TD>
    <TD 
    style="BORDER-RIGHT: 1px solid; BORDER-TOP: 1px solid; BORDER-LEFT: 1px solid; BORDER-BOTTOM: 1px solid" 
    align=left width=179><A 
      href="http://www.sjhf.net/document/fat/#表6  一个FAT16分区上的引导扇区段">表6 
      FAT16分区上的DBR组成</A></TD></TR>
  <TR>
    <TD 
    style="BORDER-RIGHT: #000000 2px ridge; PADDING-RIGHT: 4px; BORDER-TOP: #000000 2px ridge; PADDING-LEFT: 4px; PADDING-BOTTOM: 1px; BORDER-LEFT: #000000 2px ridge; PADDING-TOP: 1px; BORDER-BOTTOM: #000000 2px ridge" 
    width=70 rowSpan=7><A 
      href="http://www.sjhf.net/document/fat/#四、FAT分区原理">四、FAT分区原理</A></TD>
    <TD 
    style="BORDER-RIGHT: #000000 2px ridge; PADDING-RIGHT: 4px; BORDER-TOP: #000000 2px ridge; PADDING-LEFT: 4px; PADDING-BOTTOM: 1px; BORDER-LEFT: #000000 2px ridge; PADDING-TOP: 1px; BORDER-BOTTOM: #000000 2px ridge" 
    width=80 rowSpan=2><A 
      href="http://www.sjhf.net/document/fat/#4.1 关于DBR">4.1 关于DBR</A></TD>
    <TD 
    style="BORDER-RIGHT: #000000 2px ridge; PADDING-RIGHT: 4px; BORDER-TOP: #000000 2px ridge; PADDING-LEFT: 4px; PADDING-BOTTOM: 1px; BORDER-LEFT: #000000 2px ridge; PADDING-TOP: 1px; BORDER-BOTTOM: #000000 2px ridge" 
    width=114><A href="http://www.sjhf.net/document/fat/#4.1.1FAT32 DBR">4.1.1 
      FAT32 DBR扇区</A></TD>
    <TD 
    style="BORDER-RIGHT: 1px solid; BORDER-TOP: 1px solid; BORDER-LEFT: 1px solid; BORDER-BOTTOM: 1px solid" 
    align=left width=197><A 
      href="http://www.sjhf.net/document/fat/#图5 一个4分区的磁盘结构图示">图5&nbsp; 
      一个4分区的磁盘结构图示</A></TD>
    <TD 
    style="BORDER-RIGHT: 1px solid; BORDER-TOP: 1px solid; BORDER-LEFT: 1px solid; BORDER-BOTTOM: 1px solid" 
    align=left width=179 height=19><A 
      href="http://www.sjhf.net/document/fat/#表7  FAT16分区的BPB字段">表7 
      FAT16分区的BPB字段</A></TD></TR>
  <TR>
    <TD 
    style="BORDER-RIGHT: #000000 2px ridge; PADDING-RIGHT: 4px; BORDER-TOP: #000000 2px ridge; PADDING-LEFT: 4px; PADDING-BOTTOM: 1px; BORDER-LEFT: #000000 2px ridge; PADDING-TOP: 1px; BORDER-BOTTOM: #000000 2px ridge" 
    width=114><A 
      href="http://www.sjhf.net/document/fat/#4.1.2 FAT16 DBR">4.1.2 FAT16 
      DBR扇区</A></TD>
    <TD 
    style="BORDER-RIGHT: 1px solid; BORDER-TOP: 1px solid; BORDER-LEFT: 1px solid; BORDER-BOTTOM: 1px solid" 
    align=left width=197 height=19><A 
      href="http://www.sjhf.net/document/fat/#图6 分区表链接图示">图6 分区表链接图示</A></TD>
    <TD 
    style="BORDER-RIGHT: 1px solid; BORDER-TOP: 1px solid; BORDER-LEFT: 1px solid; BORDER-BOTTOM: 1px solid" 
    align=left width=179 height=22><A 
      href="http://www.sjhf.net/document/fat/#表8   FAT16分区的扩展BPB字段">表8 
      FAT16分区的扩展BPB字段 </A></TD></TR>
  <TR>
    <TD 
    style="BORDER-RIGHT: #000000 2px ridge; PADDING-RIGHT: 4px; BORDER-TOP: #000000 2px ridge; PADDING-LEFT: 4px; PADDING-BOTTOM: 1px; BORDER-LEFT: #000000 2px ridge; PADDING-TOP: 1px; BORDER-BOTTOM: #000000 2px ridge" 
    width=80 height=43 rowSpan=2><A 
      href="http://www.sjhf.net/document/fat/#4.2  关于保留扇区">4.2&nbsp;
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