I have trouble remembering dd command’s usage everytime! So i have decided to note this here!
Step 1. Lists all currently mounted devices.
$ diskutil list
Step 2. Unmount the disk which you want to use for writing like this;
$ diskutil unmountDisk /dev/diskN
Note: N is number of partition or disk! Do not use diskname like “diskNs1”!
Step 3. Write your image into disk you unmounted.
$ sudo dd bs=1m if=input_image_file.img of=/dev/disk2
That’s it! 🙂