+<p>The output under OS X is a bit different:</p>
+
+<pre class="listing">
+$ <tt class="userinput">./install.sh</tt>
+Not running as root; attempting to elevate privileges via sudo....
+Password:
+Installing rEFInd on OS X....
+Installing rEFInd to the partition mounted at '/'
+Copied rEFInd binary file refind_ia32.efi
+
+Copying sample configuration file as refind.conf; edit this file to configure
+rEFInd.
+
+
+WARNING: If you have an Advanced Format disk, *DO NOT* attempt to check the
+bless status with 'bless --info', since this is known to cause disk corruption
+on some systems!!
+
+
+Installation has completed successfully.</pre>
+
+<p>In either case, the details of the output differ depending on your existing configuration and how you ran the program. Unless you see an obvious warning or error, you shouldn't be concerned about minor deviations from these examples. If you run into such a situation, or if you want to install in an unusual way, read on....</p>
+
+<a name="extra_installsh">
+<h3>Extra <tt>install.sh</tt> Instructions</h3>
+</a>
+
+<p>Some details that can affect how the script runs include the following:</p>
+
+<ul>
+
+<li>If you run the script as an ordinary user, it attempts to acquire
+ <tt>root</tt> privileges by using the <tt>sudo</tt> command. This works
+ on Mac OS X and some Linux installations (such as under Ubuntu or if
+ you've added yourself to the <tt>sudo</tt> users list), but on some
+ Linux installations this will fail. On such systems, you should run
+ <tt>install.sh</tt> as <tt>root</tt>.</li>
+
+<li>Under OS X, you can run the script with a mouse by opening a Terminal
+ session and then dragging-and-dropping the <tt>install.sh</tt> file to
+ the Terminal window. You'll need to press the Return or Enter key to
+ run the script.</li>
+
+<li>Under OS X, passing the <tt>--esp</tt> option causes the script to
+ install rEFInd to the ESP. The script finds the first ESP that's
+ identified by the <tt>diskutil</tt> program and, if it's not already
+ mounted, mounts it to install rEFInd. Thus, it's conceivable that
+ <tt>install.sh</tt> will install rEFInd to the wrong partition if you
+ have multiple disks or if a disk has multiple ESPs. If you believe this
+ has happened, you may need to re-install manually.</li>
+
+<li>If you're using OS X 10.7's Whole Disk Encryption (WDE) feature, you
+ <i>must</i> install rEFInd to the ESP, so the <tt>--esp</tt> option to
+ <tt>install.sh</tt> is required. I'm still a little bit foggy about
+ what's required to boot the system once this is done; see <a
+ href="https://sourceforge.net/p/refind/discussion/general/thread/5c7d0195/">this
+ forum thread</a> for a discussion of the topic.</li>
+
+<li>If you're replacing rEFIt with rEFInd on a Mac, there's a chance that
+ <tt>install.sh</tt> will warn you about the presence of a program
+ called <tt>/Library/StartupItems/rEFItBlesser</tt> and ask if you want
+ to delete it. This program is designed to keep rEFIt set as the boot
+ manager by automatically re-blessing it if the default boot manager
+ changes. This is obviously undesirable if you install rEFInd as your
+ primary boot manager, so it's generally best to remove this program. If
+ you prefer to keep your options open, you can answer <tt
+ class="userinput">N</tt> when <tt>install.sh</tt> asks if you want to
+ delete rEFItBlesser, and instead manually copy it elsewhere. If you
+ subsequently decide to go back to using rEFIt as your primary boot
+ manager, you can restore rEFItBlesser to its place.</li>
+
+<li>If you're using OS X and an Advanced Format disk, heed the warning that
+ <tt>install.sh</tt> displays and <i><b>do not</b></i> use <tt>bless
+ --info</tt> to check your installation status; this combination has
+ been reported to cause disk corruption on some Macs!</li>
+
+<li>If you intend to boot BIOS-based OSes on a UEFI-based PC, you
+ <i>must</i> edit the <tt>refind.conf</tt> file's <tt>scanfor</tt> line
+ to enable the relevant searches. This is <i>not</i> necessary on Macs,
+ though; because of the popularity of dual boots with Windows on Macs,
+ the BIOS/legacy scans are enabled by default on Macs.</li>
+
+<li>Under both Linux and OS X, you can add the <tt>--drivers</tt> option to
+ have <tt>install.sh</tt> install all the filesystem drivers along with
+ the main rEFInd program. (The default is to <i>not</i> install any
+ drivers.)</li>
+
+<li>Under both Linux and OS X, you can add the <tt>--usedefault <tt
+ class="variable">devicepath</tt></tt> option to install rEFInd to the
+ specified device as <tt>EFI/BOOT/bootx64.efi</tt> and
+ <tt>EFI/BOOT/bootia32.efi</tt>. The specified device must be a valid
+ FAT partition. This option also tells the script to <i>not</i> make
+ changes to the computer's NVRAM. The idea is that you can easily create
+ a bootable USB flash drive with this option: Create a proper
+ FAT-formatted ESP on a disk (say, <tt>/dev/sdd1</tt>) and then type <tt
+ class="userinput">bash ./install --usedefault /dev/sdd1</tt> to turn
+ the disk into an emergency disk. This option can also be used to
+ install rEFInd to an ESP using the <a href="#naming">alternative naming
+ options</a> described later. This latter usage will result in a
+ bootable rEFInd only if no other OS has already created an NVRAM
+ variable pointing to itself.</li>
+
+</ul>
+
+<p>In any event, you should peruse the script's output to ensure that everything looks OK. <tt>install.sh</tt> displays error messages when it encounters errors, such as if the ESP is mounted read-only or if you run out of disk space. You may need to correct such problems manually and re-run the script. In some cases you may need to fall back on manual installation, which gives you better control over details such as which partition to use for installation.</p>