I want to burn a .img file of Wheezy OS to my 8GB SD Card from Mac OS X but can't figure out how.

Any help would be appreciated.
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There is a faq/howto available that discusses all the various OS-es. For the Mac it is (nearly) the same as under the various other types of Unix versions. The use of dd.

In short you type:

```
sudo dd if=path_of_your_image.img of=/dev/rdiskn bs=1m

```

**N.B: the of=/rdev/diskn needs to be the SD card, if you do this wrong you might end up destroying your Mac system!!!! Be careful!**

Be sure to use `/dev/rdiskn` instead of just `/dev/diskn`. This way you are not writing to a buffered device and [it will complete much faster](https://raspberrypi.stackexchange.com/questions/3204/sd-card-write-speed-seems-to-be-14-times-slower-than-read-speed/4059#4059).

For a total step by step guide through this process please consult this [explanation](http://elinux.org/RPi_Easy_SD_Card_Setup). There are 3 chapters for the Mac in this document.

The most easy way is described on the first chapter on Mac ([Copying an image to the SD card in Mac OS X (Only with graphical interface)](http://elinux.org/RPi_Easy_SD_Card_Setup#Copying_an_image_to_the_SD_card_in_Mac.C2.A0OS.C2.A0X_.28Only_with_graphical_interface.29)), it involves an application that does everything for you, to be complete I copy the link to this application [here](http://alltheware.wordpress.com/2012/12/11/easiest-way-sd-card-setup/)
Found a really good link: <http://www.tweaking4all.com/hardware/raspberry-pi/install-img-to-sd-card/#macosx> for installing file.img on SD card, very detailed steps!