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<H2><A NAME="SECTION00573000000000000000">Partition types</A></H2>
<P>
The partition tables (the one in the MBR, and the ones for
extended partitions) contain one byte per partition that
identifies the type of that partition. This attempts to
identify the operating system that uses the partition, or what
it uses it for. The purpose is to make it possible to avoid
having two operating systems accidentally using the same
partition. However, in reality, operating systems do not
really care about the partition type byte; e.g., Linux
doesn't care at all what it is. Worse, some of them use it
incorrectly; e.g., at least some versions of DR-DOS ignore the
most significant bit of the byte, while others don't.
<P>
There is no standardization agency to specify what each byte
value means, but some commonly accepted ones are included in
in table <A HREF="node38.html#tabpartitionids">4.1</A>. The same list is
available in the Linux <tt>fdisk</tt><A NAME="1529"> </A> program.
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<P><A NAME="1429"> </A><A NAME="tabpartitionids"> </A><IMG WIDTH=491 HEIGHT=241 ALIGN=BOTTOM ALT="table1132" SRC="img6.gif"><BR>
<STRONG>Table 4.1:</STRONG> Partition types (from the Linux <tt>fdisk</tt><A NAME="1531"> </A> program).<BR>
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<P><ADDRESS>
<I>Lars Wirzenius <BR>
Sat Nov 15 02:32:11 EET 1997</I>
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