Install the Raspberry Pi image to the SD card under Mac

Reference http://shumeipai.nxez.com/2014/05/18/raspberry-pi-under-mac-osx-to-install-raspbian-system.html

(/DEV/DISK1S1 is a partition,/dev/disk1 is a block device,/dev/rdisk1 is a raw character device)

The following error occurs when you write the image to the SD card under Mac dd: invalid number ‘4m‘ ,

Workaround from Http://www.raspberrypi.org/documentation/installation/installing-images/mac.md

• e.g.sudo dd bs=1m if=2014-09-09-wheezy-raspbian.img of=/dev/disk4

  This could result in a dd: invalid number ‘1m‘ error if you have GNU coreutils installed. In the case you need to use 1M :

  sudo dd bs=1M if=image.img of=/dev/DISK

  This would take a few minutes.

Install the Raspberry Pi image to the SD card under Mac