<pre class="listing"># <tt class="userinput">dpkg -i refind_0.10.3-1_amd64.deb</tt></pre>
+<p class="sidebar"><b>Warning:</b> Ubuntu 16.04's <tt>sbsigntool</tt> package has a bug that causes the <tt>sbsign</tt> utility to crash randomly. (See <a href="https://bugs.launchpad.net/ubuntu/+source/sbsigntool/+bug/1574372">this bug report</a> for details.) When installing Ubuntu with Secure Boot active from the PPA, this bug will be triggered and is likely to prevent successful installation. Therefore, I recommend you disable Secure Boot or install from the Debian package (with the <tt>sbsigntool</tt> package <i>uninstalled</i>) to avoid this problem. This bug does not exist in Ubuntu 15.10 and earlier.</p>
+
<p>Either command produces output similar to that described for <a href="#installsh">using the <tt>refind-install</tt> script,</a> so you can check it for error messages and other signs of trouble. The package file installs rEFInd and registers it with the EFI to be the default boot loader. The script that runs as part of the installation process tries to determine if you're using Secure Boot, and if so it will try to configure rEFInd to launch using shim; however, this won't work correctly on all systems. Ubuntu 12.10 users who are booting with Secure Boot active should be wary, since the resulting installation will probably try to use Ubuntu's version of shim, which won't work correctly with rEFInd. The shim program provided with more recent versions of Ubuntu should work correctly.</p>
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