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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Bootloader expert use</title>
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<div lang="" class="section" title="Bootloader expert use">
<div class="titlepage">
<div>
<div>
<h2 class="title"><a name="setupBootloaderExpert"></a>Bootloader expert use
</h2>
</div>
</div>
</div>
<p><a name="setupBootloaderExpert-pa1"></a>If you haven't done so
yet, please read <a class="xref" href="setupBootloader.html" title="Bootloader main options">the section called “Bootloader main
options”</a> first.
</p>
<div class="section" title="Adding a GRUB2 based system manually">
<div class="titlepage">
<div>
<div>
<h3 class="title"><a name="addingGRUB2system"></a>Adding a GRUB2 based system
manually
</h3>
</div>
</div>
</div>
<p><a name="setupBootloaderExpert-pa7"></a>A GRUB2 based system
may be added to the Mageia boot menu as follows:
</p>
<div class="itemizedlist">
<ul class="itemizedlist">
<li class="listitem">
<p><a name="setupBootloaderExpert-pa8"></a>Boot into the
system in question. In order to determine the GRUB2 version run the
following command in a terminal:
</p>
<p><a name="setupBootloaderExpert-pa9"></a><code class="literal">sudo
grub-install --version</code></p>
<p><a name="setupBootloaderExpert-pa10"></a>or if that
fails try:
</p>
<p><a name="setupBootloaderExpert-pa11"></a><code class="literal">sudo
grub2-install --version</code></p>
</li>
<li class="listitem">
<p><a name="setupBootloaderExpert-pa12"></a>If this returns
"GNU GRUB version 0.97" (possibly with a custom suffix), then it is
using GRUB (otherwise called GRUB legacy) not GRUB2 and your system
should be correctly identified by Mageia during installation and added
automatically to the menu.
</p>
</li>
<li class="listitem">
<p><a name="setupBootloaderExpert-pa15"></a>If this returns
(GRUB) 1.98 or 1.99 or 2.xx, then you are using GRUB2.
</p>
<p><a name="setupBootloaderExpert-pa16"></a>Make a note of
the version and enter this command to identify the root
partition:
</p>
<p><a name="setupBootloaderExpert-pa17"></a><code class="literal">df -h
/ |(read; awk '{print $1; exit}')</code></p>
<p><a name="setupBootloaderExpert-pa18"></a>This will
output something like :
</p>
<p><a name="setupBootloaderExpert-pa20"></a><code class="literal">/dev/sdb11</code></p>
<p><a name="setupBootloaderExpert-pa21"></a>sdb11 is the
root partition - make a note of it.
</p>
</li>
<li class="listitem">
<p><a name="setupBootloaderExpert-pa22"></a>Now check that
the /boot folder is in the same partition by entering the following
command:
</p>
<p><a name="setupBootloaderExpert-pa23"></a><code class="literal">df -h
/boot |(read; awk '{print $1; exit}')</code></p>
<p><a name="setupBootloaderExpert-pa25"></a>If the /boot
partition is different to the root partition then make a note and use
the /boot partition in the "root" line when editing menu.lst
below.
</p>
</li>
<li class="listitem">
<p><a name="setupBootloaderExpert-pa26"></a>You can now
shut down the system and install Mageia.
</p>
</li>
<li class="listitem">
<p><a name="setupBootloaderExpert-pa27"></a>In your new
running Mageia system, open a terminal and as root edit the file
/boot/grub/menu.lst as follows:
</p>
</li>
<li class="listitem">
<p><a name="setupBootloaderExpert-pa28"></a>To become root
use:
</p>
<p><a name="setupBootloaderExpert-pa29"></a><code class="literal">su
-</code></p>
<p><a name="setupBootloaderExpert-pa30"></a>(enter root
password)
</p>
</li>
<li class="listitem">
<p><a name="setupBootloaderExpert-pa31"></a>To open the
file in an editor use:
</p>
<p><a name="setupBootloaderExpert-pa32"></a><code class="literal">kwrite
/boot/grub/menu.lst</code></p>
<p><a name="setupBootloaderExpert-pa33"></a>(replace
"kwrite" with "gedit" if you are using Gnome)
</p>
</li>
<li class="listitem">
<p><a name="setupBootloaderExpert-pa34"></a>Add the
following entry for your (e.g. Ubuntu) system, possibly as the second
stanza. The position the item appears in the menu will depend on its
position in the file:
</p>
<p><a name="setupBootloaderExpert-pa35"></a><code class="literal">title
Ubuntu</code></p>
<p><a name="setupBootloaderExpert-pa36"></a><code class="literal">root
(hd1,10)</code></p>
<p><a name="setupBootloaderExpert-pa37"></a><code class="literal">kernel
/boot/grub/core.img</code></p>
</li>
<li class="listitem">
<div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;">
<table border="0" summary="Note">
<tr>
<td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="note.png"></td>
<th align="left"></th>
</tr>
<tr>
<td align="left" valign="top">
<p><a name="setupBootloaderExpert-pa42"></a>In the second
line, "hd1" means the second hard drive, the "10" indicates the 11th
partition. Drives and partitions in Mageia's legacy GRUB count from
zero.
</p>
<p><a name="setupBootloaderExpert-pa43"></a>Therefore:
</p>
<p><a name="setupBootloaderExpert-pa44"></a><code class="literal">sdb11 =
(hd1,10)</code></p>
<p><a name="setupBootloaderExpert-pa45"></a><code class="literal">sda1
= (hd0,0)</code></p>
</td>
</tr>
</table>
</div>
</li>
<li class="listitem">
<p><a name="setupBootloaderExpert-pa38"></a>If the GRUB2
version is 2.xx then change the last line to :
</p>
<p><a name="setupBootloaderExpert-pa39"></a><code class="literal">kernel
/boot/grub/i386-pc/core.img</code></p>
<p><a name="setupBootloaderExpert-pa40"></a>If you needed
to use "grub2-install" earlier then change <code class="literal">"grub"</code>
to <code class="literal">"grub2"</code> in the last line.
</p>
<p><a name="setupBootloaderExpert-pa40a"></a>If /boot was
on a separate partition, then remove <code class="literal">"/boot"</code> from
the last line.
</p>
</li>
<li class="listitem">
<p><a name="setupBootloaderExpert-pa41"></a>Save the file
and re-boot. You should now see your "Ubuntu" entry in the menu and be
able to boot from it.
</p>
</li>
</ul>
</div>
</div>
<div class="section" title="Using an existing GRUB2 bootloader">
<div class="titlepage">
<div>
<div>
<h3 class="title"><a name="usingExistingBootloaderGRUB2"></a>Using an
existing GRUB2 bootloader
</h3>
</div>
</div>
</div>
<p><a name="setupBootloaderExpert-pa49a"></a>If you didn't read
the general part about using an existing bootloader yet, do so now. See
<a class="xref" href="setupBootloader.html#usingExistingBootloader" title="Using an existing bootloader">the section called “Using an
existing bootloader”</a></p>
<div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;">
<table border="0" summary="Note">
<tr>
<td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="note.png"></td>
<th align="left"></th>
</tr>
<tr>
<td align="left" valign="top">
<p><a name="setupBootloaderExpert-pa50"></a>There is a known
bug in OS-prober used during GRUB2 installation in some versions
of Debian/Ubuntu that incorrectly creates grub.cfg when adding Mageia
(or Mandriva) systems. This is simple to work around and details of a
fix can be found in the Mageia forum. Search for "prober", the topic is
"grub problem", post #9 has the information.
</p>
<p><a name="setupBootloaderExpert-pa51"></a>To make the fix
permanent so that it will survive an Ubuntu kernel update, the Mageia
entry should be added to <code class="literal">/etc/grub.d/40_custom</code></p>
<p><a name="setupBootloaderExpert-pa52"></a>Stop Press: The bug
is fixed in os-prober-1.53 released on 8th May 2012. So now, upgrading to
the new version in your GRUB2 installation is the preferred solution.
</p>
</td>
</tr>
</table>
</div>
</div>
</div>
</body>
</html>
|
