Fast and clean !
$ df -h
Filesystem Size Used Avail Capacity iused ifree %iused Mounted on
/dev/disk1 465Gi 188Gi 276Gi 41% 49449884 72346210 41% /
...
/dev/disk2s1 56Mi 14Mi 42Mi 26% 512 0 100% /Volumes/boot
$ sudo diskutil unmount /dev/disk2s1
Volume boot on disk2s1 unmounted
$ sudo dd bs=1m if=2015-02-16-raspbian-wheezy.img of=/dev/rdisk2
...
7601+0 records in
7600+0 records out
7969177600 bytes transferred in 657.521117 secs (12120033 bytes/sec)
$ sudo mount -t cifs -o user=changeme,password=changeme,sec=ntlmv2 //192.168.1x.x/sharedfolder /home/username/sambashare/