RayViljoen/Raspberry-PI-SD-Installer-OS-X — pull request #1 by kramerc (2013-03-20 16:09:09+00:00)
Title: Use the raw disk device for better performance.

Using `/dev/rdisk#` results in faster write performance than `/dev/disk#` as [demonstrated on Raspberry Pi Stack Exchange](http://raspberrypi.stackexchange.com/a/4059).