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diff --git a/sag-0.6.1-www/Invisible/sag-0.6/node36.html b/sag-0.6.1-www/Invisible/sag-0.6/node36.html new file mode 100644 index 0000000..788a4f5 --- /dev/null +++ b/sag-0.6.1-www/Invisible/sag-0.6/node36.html @@ -0,0 +1,74 @@ +<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> +<!--Converted with LaTeX2HTML 96.1-h (September 30, 1996) by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds --> +<HTML> +<HEAD> +<TITLE>The MBR, boot sectors and partition table</TITLE> +<META NAME="description" CONTENT="The MBR, boot sectors and partition table"> +<META NAME="keywords" CONTENT="sag"> +<META NAME="resource-type" CONTENT="document"> +<META NAME="distribution" CONTENT="global"> +<LINK REL=STYLESHEET HREF="sag.css"> +</HEAD> +<BODY LANG="EN" > + <A NAME="tex2html769" HREF="node37.html"><IMG WIDTH=37 HEIGHT=24 ALIGN=BOTTOM ALT="next" SRC="./next_motif.gif"></A> <A NAME="tex2html767" HREF="node35.html"><IMG WIDTH=26 HEIGHT=24 ALIGN=BOTTOM ALT="up" SRC="./up_motif.gif"></A> <A NAME="tex2html761" HREF="node35.html"><IMG WIDTH=63 HEIGHT=24 ALIGN=BOTTOM ALT="previous" SRC="./previous_motif.gif"></A> <A NAME="tex2html771" HREF="node1.html"><IMG WIDTH=65 HEIGHT=24 ALIGN=BOTTOM ALT="contents" SRC="./contents_motif.gif"></A> <A NAME="tex2html772" HREF="node114.html"><IMG WIDTH=43 HEIGHT=24 ALIGN=BOTTOM ALT="index" SRC="./index_motif.gif"></A> <BR> +<B> Next:</B> <A NAME="tex2html770" HREF="node37.html">Extended and logical partitions</A> +<B>Up:</B> <A NAME="tex2html768" HREF="node35.html">Partitions</A> +<B> Previous:</B> <A NAME="tex2html762" HREF="node35.html">Partitions</A> +<BR> <P> +<H2><A NAME="SECTION00571000000000000000">The MBR, boot sectors and partition table</A></H2> +<P> + The information about how a hard disk has been partitioned is + stored in its first sector (that is, the first sector of the + first track on the first disk surface). The first sector is the + <b>master boot record</b> (MBR) of the disk; this is the sector + that the BIOS reads in and starts when the machine is first + booted. The master boot record contains a small program that + reads the partition table, checks which partition is active + (that is, marked bootable), and reads the first sector of that + partition, the partition's <b>boot sector</b> (the MBR is also a + boot sector, but it has a special status and therefore a special + name). This boot sector contains another small program that + reads the first part of the operating system stored on that + partition (assuming it is bootable), and then starts it. +<P> + The partitioning scheme is not built into the hardware, or + even into the BIOS. It is only a convention that many + operating systems follow. Not all operating systems do follow + it, but they are the exceptions. Some operating + systems support partitions, but they occupy one partition on + the hard disk, and use their internal partitioning method + within that partition. The latter type exists peacefully + with other operating systems (including Linux), and does not + require any special measures, but an operating system + that doesn't support partitions cannot co-exist on the same + disk with any other operating system. +<P> + As a safety precaution, it is a good idea to write down the + partition table on a piece of paper, so that if it ever corrupts + you don't have to lose all your files. (A bad partition table + can be fixed with <tt>fdisk</tt><A NAME="1522"> </A>). The relevant information + is given by the <tt>fdisk -l</tt><A NAME="1524"> </A> command: + <BLOCKQUOTE> <TT> +<code>$</code> <i>fdisk -l /dev/hda</i> <BR> +<code></code> <BR> +<code>Disk /dev/hda: 15 heads, 57 sectors, 790 cylinders</code> <BR> +<code>Units = cylinders of 855 * 512 bytes</code> <BR> +<code></code> <BR> +<code> Device Boot Begin Start End Blocks Id System</code> <BR> +<code>/dev/hda1 1 1 24 10231+ 82 Linux swap</code> <BR> +<code>/dev/hda2 25 25 48 10260 83 Linux native</code> <BR> +<code>/dev/hda3 49 49 408 153900 83 Linux native</code> <BR> +<code>/dev/hda4 409 409 790 163305 5 Extended</code> <BR> +<code>/dev/hda5 409 409 744 143611+ 83 Linux native</code> <BR> +<code>/dev/hda6 745 745 790 19636+ 83 Linux native</code> <BR> +<code>$</code> + </TT></BLOCKQUOTE><HR><A NAME="tex2html769" HREF="node37.html"><IMG WIDTH=37 HEIGHT=24 ALIGN=BOTTOM ALT="next" SRC="./next_motif.gif"></A> <A NAME="tex2html767" HREF="node35.html"><IMG WIDTH=26 HEIGHT=24 ALIGN=BOTTOM ALT="up" SRC="./up_motif.gif"></A> <A NAME="tex2html761" HREF="node35.html"><IMG WIDTH=63 HEIGHT=24 ALIGN=BOTTOM ALT="previous" SRC="./previous_motif.gif"></A> <A NAME="tex2html771" HREF="node1.html"><IMG WIDTH=65 HEIGHT=24 ALIGN=BOTTOM ALT="contents" SRC="./contents_motif.gif"></A> <A NAME="tex2html772" HREF="node114.html"><IMG WIDTH=43 HEIGHT=24 ALIGN=BOTTOM ALT="index" SRC="./index_motif.gif"></A> <BR> +<B> Next:</B> <A NAME="tex2html770" HREF="node37.html">Extended and logical partitions</A> +<B>Up:</B> <A NAME="tex2html768" HREF="node35.html">Partitions</A> +<B> Previous:</B> <A NAME="tex2html762" HREF="node35.html">Partitions</A> +<P><ADDRESS> +<I>Lars Wirzenius <BR> +Sat Nov 15 02:32:11 EET 1997</I> +</ADDRESS> +</BODY> +</HTML> |