I recently purchased a Raspberry Pi 2. I needed to put the OS on the SD card I had gotten. I don’t want to forget how I did this, so I’m writing it down.
openssl sha1 /path/to/file.zipFAT32diskutil listsudo diskutil unmount /dev/disk2s1 (Repeat as needed for all partitions).img file.sudo dd bs=1m if=/path/of/img/file.img of=/dev/desk2 (Whatever disk it is. There is no progress bar so depending on your hardware this can take some time. Be patient.)