Some updates from a 2014.06.01 installation

Thanks for this guide, I've just used it to install Arch Linux (2014.06.01) on my 11-inch, Mid 2012 MacBook Air without a hitch.

However, I've updated a few points:

* Set a root password during system config
* Use the --compress option for newer `grub-mkstandalone`
* Copy boot.efi to the boot loader partition… I found this was an absolutely necessary requirement!

Best,
Ribmo.