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docs/Install-Guide/install-guide-2.2.2/node90.html
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docs/Install-Guide/install-guide-2.2.2/node90.html
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<!DOCTYPE HTML PUBLIC "-//W3O//DTD W3 HTML 2.0//EN">
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<!Converted with LaTeX2HTML 95.1 (Fri Jan 20 1995) by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds >
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<HEAD>
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<TITLE>2.5.4.2 Problems booting Linux from the hard drive</TITLE>
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</HEAD>
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<BODY>
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<meta name="description" value="2.5.4.2 Problems booting Linux from the hard drive">
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<meta name="keywords" value="gs">
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<meta name="resource-type" value="document">
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<meta name="distribution" value="global">
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<P>
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<BR> <HR><A NAME=tex2html2841 HREF="node91.html"><IMG ALIGN=BOTTOM ALT="next" SRC="next_motif.gif"></A> <A NAME=tex2html2839 HREF="node88.html"><IMG ALIGN=BOTTOM ALT="up" SRC="up_motif.gif"></A> <A NAME=tex2html2833 HREF="node89.html"><IMG ALIGN=BOTTOM ALT="previous" SRC="previous_motif.gif"></A> <A NAME=tex2html2843 HREF="node1.html"><IMG ALIGN=BOTTOM ALT="contents" SRC="contents_motif.gif"></A> <A NAME=tex2html2844 HREF="node250.html"><IMG ALIGN=BOTTOM ALT="index" SRC="index_motif.gif"></A> <BR>
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<B> Next:</B> <A NAME=tex2html2842 HREF="node91.html">2.5.4.3 Problems logging in</A>
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<B>Up:</B> <A NAME=tex2html2840 HREF="node88.html">2.5.4 Problems after installing </A>
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<B> Previous:</B> <A NAME=tex2html2834 HREF="node89.html">2.5.4.1 Problems booting Linux </A>
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<BR> <HR> <P>
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<H3><A NAME=SECTION00454200000000000000>2.5.4.2 Problems booting Linux from the hard drive</A></H3>
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<P>
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<A NAME=1727> </A>
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<A NAME=1728> </A>
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If you opted to install LILO, instead of creating a boot floppy, then
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you should be able to boot Linux from the hard drive. However, the
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automated LILO installation procedure used by many distributions
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is not always perfect. It may make incorrect assumptions about your
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partition layout, in which case you will need to re-install LILO to
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get everything right. Installing LILO is covered in
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Chapter <A HREF="node155.html#chapsysadmnum">4</A>.
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<P>
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<UL><LI> <b>System reports ``<tt>Drive not bootable---Please insert system
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disk.</tt>''</b>
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You will get this error message if the hard drive's master
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boot record is corrupt in some way.
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In most cases, it's harmless, and everything
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else on your drive is still intact. There are several ways around this:
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<P>
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<OL><LI> While partitioning your drive using <tt>fdisk</tt>, you may have deleted
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the partition that was marked as ``active''. MS-DOS and other operating
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systems attempt to boot the ``active'' partition at boot time (Linux pays
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no attention to whether the partition is ``active'' or not). You may be able
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to boot MS-DOS from floppy and
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run <tt>FDISK</tt> to set the active flag on your MS-DOS
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paritition, and all will be well.
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<P>
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Another command to try (with MS-DOS 5.0 and higher) is
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<P><TT> FDISK /MBR
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<P></TT>
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This command will attempt to rebuild the hard drive master boot record
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for booting MS-DOS, overwriting LILO. If you no longer have MS-DOS on your
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hard drive, you'll need to boot Linux from floppy and
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attempt to install LILO later.
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<P>
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<LI> If you created an MS-DOS partition using Linux's version of <tt>fdisk</tt>,
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or vice versa, you may get this error. You should create MS-DOS
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partitions only using MS-DOS's version <tt>FDISK</tt>. (The same applies to
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operating systems other than MS-DOS.) The best solution
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here is either to start from scratch and repartition the drive correctly,
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or to merely delete and re-create the offending partitions using the
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correct version of <tt>fdisk</tt>.
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<P>
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<A NAME=1740> </A>
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<A NAME=1741> </A>
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<LI> The LILO installation procedure may have failed. In this case, you
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should either boot from your Linux boot floppy (if you have one), or from the
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original installation media. Either of these should provide options for
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specifying the Linux root partition to use when booting. Hold down
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<IMG BORDER=0 ALIGN=BOTTOM ALT="" SRC="img90.gif"> or <IMG BORDER=0 ALIGN=BOTTOM ALT="" SRC="img91.gif"> at boot time, and press <IMG BORDER=0 ALIGN=BOTTOM ALT="" SRC="img92.gif"> from the
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boot menu for a list of options.
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<P>
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<P>
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</OL>
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<P>
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<LI> <b>When booting the system from the hard drive, MS-DOS (or
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another operating system) starts instead of Linux.</b> First of all, be
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sure that you actually installed LILO when installing the Linux software.
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If not, then the system will still boot MS-DOS (or whatever other
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operating system you may have) when you attempt to boot from the hard
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drive. In order to boot Linux from the hard drive, you will need to install
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LILO (see Chapter <A HREF="node155.html#chapsysadmnum">4</A>).
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<P>
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On the other hand, if you <em>did</em> install LILO, and another
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operating system boots instead of Linux, then you have LILO configured to
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boot that other operating system by default. While the system is booting,
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hold down <IMG BORDER=0 ALIGN=BOTTOM ALT="" SRC="img93.gif"> or <IMG BORDER=0 ALIGN=BOTTOM ALT="" SRC="img94.gif">, and press <IMG BORDER=0 ALIGN=BOTTOM ALT="" SRC="img95.gif"> at the boot prompt.
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This should present you with a list of possible operating systems to boot;
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select the appropriate option (usually just ``<tt>linux</tt>'') to boot Linux.
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<P>
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If you wish to select Linux as the default
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operating system to boot, you will need to re-install LILO. See
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Chapter <A HREF="node155.html#chapsysadmnum">4</A>.
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<P>
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It also may be possible that you attempted to install LILO, but the
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installation procedure failed in some way. See the previous item.
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<P>
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</UL><BR> <HR><A NAME=tex2html2841 HREF="node91.html"><IMG ALIGN=BOTTOM ALT="next" SRC="next_motif.gif"></A> <A NAME=tex2html2839 HREF="node88.html"><IMG ALIGN=BOTTOM ALT="up" SRC="up_motif.gif"></A> <A NAME=tex2html2833 HREF="node89.html"><IMG ALIGN=BOTTOM ALT="previous" SRC="previous_motif.gif"></A> <A NAME=tex2html2843 HREF="node1.html"><IMG ALIGN=BOTTOM ALT="contents" SRC="contents_motif.gif"></A> <A NAME=tex2html2844 HREF="node250.html"><IMG ALIGN=BOTTOM ALT="index" SRC="index_motif.gif"></A> <BR>
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<B> Next:</B> <A NAME=tex2html2842 HREF="node91.html">2.5.4.3 Problems logging in</A>
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<B>Up:</B> <A NAME=tex2html2840 HREF="node88.html">2.5.4 Problems after installing </A>
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<B> Previous:</B> <A NAME=tex2html2834 HREF="node89.html">2.5.4.1 Problems booting Linux </A>
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<BR> <HR> <P>
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<BR> <HR>
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<P><ADDRESS>
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<I>Matt Welsh <BR>
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mdw@sunsite.unc.edu</I>
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</ADDRESS>
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</BODY>
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