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diff --git a/sag-0.6.1-www/Invisible/sag-0.6/node37.html b/sag-0.6.1-www/Invisible/sag-0.6/node37.html new file mode 100644 index 0000000..843dc3e --- /dev/null +++ b/sag-0.6.1-www/Invisible/sag-0.6/node37.html @@ -0,0 +1,53 @@ +<!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>Extended and logical partitions</TITLE> +<META NAME="description" CONTENT="Extended and logical partitions"> +<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="tex2html781" HREF="node38.html"><IMG WIDTH=37 HEIGHT=24 ALIGN=BOTTOM ALT="next" SRC="./next_motif.gif"></A> <A NAME="tex2html779" HREF="node35.html"><IMG WIDTH=26 HEIGHT=24 ALIGN=BOTTOM ALT="up" SRC="./up_motif.gif"></A> <A NAME="tex2html773" HREF="node36.html"><IMG WIDTH=63 HEIGHT=24 ALIGN=BOTTOM ALT="previous" SRC="./previous_motif.gif"></A> <A NAME="tex2html783" HREF="node1.html"><IMG WIDTH=65 HEIGHT=24 ALIGN=BOTTOM ALT="contents" SRC="./contents_motif.gif"></A> <A NAME="tex2html784" HREF="node114.html"><IMG WIDTH=43 HEIGHT=24 ALIGN=BOTTOM ALT="index" SRC="./index_motif.gif"></A> <BR> +<B> Next:</B> <A NAME="tex2html782" HREF="node38.html">Partition types</A> +<B>Up:</B> <A NAME="tex2html780" HREF="node35.html">Partitions</A> +<B> Previous:</B> <A NAME="tex2html774" HREF="node36.html">The MBRboot sectors </A> +<BR> <P> +<H2><A NAME="SECTION00572000000000000000">Extended and logical partitions</A></H2> +<P> + The original partitioning scheme for PC hard disks allowed + only four partitions. This quickly turned out to be too little + in real life, partly because some people want more than four + operating systems (Linux, MS-DOS, OS/2, Minix, FreeBSD, NetBSD, or + Windows/NT, to name a few), but primarily because sometimes it + is a good idea to have several partitions for one + operating system. For example, swap space is usually best put + in its own partition for Linux instead of in the main + Linux partition for reasons of speed (see below). +<P> + To overcome this design problem, <b>extended partitions</b> were + invented. This trick allows partitioning a <b>primary + partition</b> into sub-partitions. The + primary partition thus subdivided is the extended partition; the + subpartitions are <b>logical partitions</b>. They behave + like primary<A NAME="tex2html17" HREF="footnode.html#1120"><IMG ALIGN=BOTTOM ALT="gif" SRC="./foot_motif.gif"></A> partitions, but are created + differently. There is no speed difference between them. +<P> + The partition structure of a hard disk might look like that in + figure <A HREF="node37.html#figharddisklayout">4.2</A>. The disk is divided into + three primary partitions, the second of which is divided into + two logical partitions. Part of the disk is not partitioned at + all. The disk as a whole and each primary partition has a boot + sector. +<P> + <P><A NAME="1126"> </A><A NAME="figharddisklayout"> </A><IMG WIDTH=281 HEIGHT=276 ALIGN=BOTTOM ALT="figure1122" SRC="img5.gif"><BR> +<STRONG>Figure 4.2:</STRONG> A sample hard disk partitioning.<BR> +<P><BR> <HR> +<P><ADDRESS> +<I>Lars Wirzenius <BR> +Sat Nov 15 02:32:11 EET 1997</I> +</ADDRESS> +</BODY> +</HTML> |