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<title>Libreboot documentation: installing GNU/Linux</title>
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<header>
<h1>Boot a GNU/Linux installer on USB</h1>
<aside>Or <a href="../index.html">back to main index</a></aside>
</header>
<h2>How to boot from USB</h2>
<p>
Connect the USB drive. Check dmesg:<br/>
<b>$ dmesg</b>
</p>
<p>
Check that it wasn't automatically mounted. If it was, unmount it. For example:<br/>
<b>$ sudo umount /dev/sdb1</b><br/>
<b># umount /dev/sdb1</b>
</p>
<p>
dmesg told you what device it is. Overwrite the drive, writing your distro ISO to it with dd. For example:<br/>
<b>$ sudo dd if=gnulinux.iso of=/dev/sdb bs=8M; sync</b><br/>
<b># dd if=gnulinux.iso of=/dev/sdb bs=8M; sync</b>
</p>
<p>
Boot it in GRUB using the "Parse ISOLINUX config (USB)" option (it's in default libreboot grub.cfg, at least).
</p>
<p>
If the ISOLINUX parser won't work, then press C to get to GRUB command line.<br/>
<b>ls</b><br/>
Get the device from above output, eg (usb0). Example:<br/>
<b>cat (usb0)/isolinux/isolinux.cfg</b><br/>
Either this will show the ISOLINUX menuentries for that ISO, or link to other .cfg files, for example /isolinux/foo.cfg.<br/>
If it did that, then you do:<br/>
<b>cat (usb0)/isolinux/foo.cfg</b><br/>
And so on, until you find the correct menuentries for ISOLINUX.
</p>
<p>
Now look at the ISOLINUX menuentry. It'll look like:<br/>
<pre>
kernel /path/to/kernel
append PARAMETERS initrd=/path/to/initrd MAYBE_MORE_PARAMETERS
</pre>
GRUB works the same way, but in it's own way. Example GRUB commands:<br/>
<b>linux (usb0)/path/to/kernel PARAMETERS MAYBE_MORE_PARAMETERS</b><br/>
<b>initrd (usb0)/path/to/initrd</b><br/>
<b>boot</b><br/>
Of course this will vary from distro to distro. If you did all that correctly, it should now be booting the ISO
the way you specified.
</p>
<hr/>
<p>
Copyright © 2014 Francis Rowe, All Rights Reserved.<br/>
See <a href="../license.html">../license.html</a> for license conditions.
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