188 lines
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188 lines
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<TITLE>The Answer Guy 38: Installing on a Big Drive: More on the 1023 Cylinder Limit</TITLE>
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<H4>"The Linux Gazette...<I>making Linux just a little more fun!</I>"</H4>
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<P> <hr> <P>
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<center>
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<H1><A NAME="answer">
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<img src="../../gx/dennis/qbubble.gif" alt="(?)"
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border="0" align="middle">
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<font color="#B03060">The Answer Guy</font>
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<img src="../../gx/dennis/bbubble.gif" alt="(!)"
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border="0" align="middle">
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</A></H1>
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<BR>
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<H4>By James T. Dennis,
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<a href="mailto:linux-questions-only@ssc.com">linux-questions-only@ssc.com</a><BR>
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Starshine Technical Services,
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<A HREF="http://www.starshine.org/">http://www.starshine.org/</A>
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</H4>
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</center>
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<p><hr><p>
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<!-- begin 18 -->
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<H3 align="left"><img src="../../gx/dennis/qbubble.gif"
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height="50" width="60" alt="(?) " border="0"
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>Installing on a Big Drive: More on the 1023 Cylinder Limit</H3>
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<p><strong>From ariel lh on Fri, 12 Feb 1999
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</strong></p>
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<!-- ::
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Installing on a Big Drive: More on the 1023 Cylinder Limit
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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:: -->
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<P><STRONG><IMG SRC="../../gx/dennis/qbub.gif" ALT="(?)"
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HEIGHT="28" WIDTH="50" BORDER="0"
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>
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Hi!, i have a 6.4Gb Western Digital HDD partitioned with EZ-Drive
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(version 9.03w) into 4 partitions (3 of 1.95Gb and one 117Mb). The
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first one has MS-Windows and the other 3 partitions are
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empty. I've read lots of info about installing linux on large HDD,
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because it has to be installed below the 1024 cylinders.... i must
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tell you that i don't understand anything about this nor
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partitions. How would i know is i can install linux in any of the
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other partitions?
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</STRONG></P>
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<P><STRONG>
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Thanks
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</STRONG></P>
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<BLOCKQUOTE><IMG SRC="../../gx/dennis/bbub.gif" ALT="(!)"
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HEIGHT="28" WIDTH="50" BORDER="0"
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>
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Linux doesn't have to be installed below the 1023 cylinder
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boundary. It doesn't have to be installed on the first
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or second hard drive. Linux can be installed in many
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different ways across all sorts of devices. (Indeed
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its possible to install Linux on a remote hard drive
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and to a boot over the network mounting the root filesystem
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via NFS).
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</BLOCKQUOTE>
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<BLOCKQUOTE>
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There are two rules regarding a Linux installation:
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</BLOCKQUOTE>
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<BLOCKQUOTE><ol>
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<li>The kernel must get loaded (by a supported
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system into a sufficient block of memory)
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<li>The kernel must be able to access a root filesystem
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somewhere.
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</ol></BLOCKQUOTE>
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<BLOCKQUOTE>
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The first requirement is generally thought to mean that
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you must install Linux where a typical PC BIOS can "find"
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it. Thus the commonly repeated "1024 cylinder" problem.
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Old BIOS' couldn't access beyond the 1024th cylinder
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(numbered 0 through 1023, naturally). This was a BIOS
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limitation and it applies to all operating systems.
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However, some of them (like NT and OS/2) get around that
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by using a "protected mode" (32-bit) boot loader. This
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generally requires that these systems create a small
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1 or two Mb mini-partition. Linux doesn't require
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this.
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</BLOCKQUOTE>
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<BLOCKQUOTE>
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The most commonly used boot loader for Linux (LILO)
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is a small real mode program. It therefore must work
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with the BIOS to load a Linux kernel. Another common
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loader is Syslinux. This installs a suitable boot loader
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into an MS-DOS (FAT) formatted floppy. Yet another
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option is <tt>LOADLIN.EXE</tt>, a DOS program for loading Linux
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(from a common DOS batch file, or from the DOS <tt>CONFIG.SYS</tt>
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--- via a <tt>SHELL=</tt> or <tt>INSTALL=</tt> directive).
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<tt>LOADLIN.EXE</tt> is
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currently included with a newer package called <tt>Linux_Load95</tt>
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--- which is a Win '9x loader.
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</BLOCKQUOTE>
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<BLOCKQUOTE>
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The easiest way to address the situation you've described
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is to use <tt>LOADLIN.EXE</tt> --- let it load your kernel.
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</BLOCKQUOTE>
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<BLOCKQUOTE>
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You can do your initial installation by booting off of
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a CD (assuming you get one of the distributions that's
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shipped on a bootable CD --- which would be approximately
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all of them within the last couple of years). After the
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installation is complete (most distributions don't offer
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direct <tt>LOADLIN.EXE</tt> support) --- you'd copy your Linux
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kernel to some directory under one of your DOS/Windows
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filesystems. Then you boot into MS-DOS (Win '9x "Safe
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Mode") and install <tt>LOADLIN</tt>.
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</BLOCKQUOTE>
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<BLOCKQUOTE>
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Please search back issues of Linux Gazette for
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more details on that.
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</BLOCKQUOTE>
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<!-- sig -->
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<!-- end 18 -->
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<P> <hr> <P>
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<H5 align="center"><a href="http://www.linuxgazette.com/copying.html"
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>Copyright ©</a> 1999, James T. Dennis
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<BR>Published in <I>The Linux Gazette</I> Issue 38 March 1999</H5>
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