- UEFI-based PC, a hybrid MBR will be useless at best, so you shouldn't
- create one, and it's safest to not install <tt>gptsync.efi</tt>. If
- you're using a hybrid MBR to enable dual-booting Windows and OS X on a
- Mac, though, placing this program file in the ESP's or Mac boot
- partition's <tt>efi/tools</tt> directory will enable you to regenerate
- your hybrid MBR should some other tool convert the MBR to a standard
- protective MBR. You can obtain the file from the <a
- href="http://refit.sourceforge.net">original rEFIt package.</a></li>
+ UEFI-based PC, a hybrid MBR is likely to be useless at best, so you
+ shouldn't create one, and it's safest to not install
+ <tt>gptsync.efi</tt>. If you're using a hybrid MBR to enable
+ dual-booting Windows and OS X on a Mac, though, placing this program
+ file in the ESP's or Mac boot partition's <tt>EFI/tools</tt> directory
+ will enable you to regenerate your hybrid MBR should some other tool
+ convert the MBR to a standard protective MBR. You can obtain the file
+ from the <a href="http://refit.sourceforge.net">original rEFIt
+ package,</a> or beginning with rEFInd 0.6.9, an updated version is
+ included in the rEFInd package. The rEFInd version of <tt>gptsync_<tt
+ class="variable">arch</tt>.efi</tt> uses a more sophisticated algorithm
+ for determining what GPT partitions to duplicate in the MBR and it
+ includes additional safeguards to minimize the risk of damage should
+ you run the program on a disk that might have been damaged. The
+ original rEFIt version of the program usually goes by the filename
+ <tt>gptsync.efi</tt>, whereas the updated rEFInd version ships with an
+ architecture code, as in <tt>gptsync_x64.efi</tt> or
+ <tt>gptsync_ia32.efi</tt>. The rEFInd <tt>install.sh</tt> script
+ installs <tt>gptsync_<tt class="variable">arch</tt>.efi</tt> when run
+ under OS X, but not when run on Linux. In addition to installing the
+ program, you must edit <tt>refind.conf</tt>, uncomment the
+ <tt>showtools</tt> line, and add <tt>gptsync</tt> to its list of
+ options.</li>