diff --git a/README.md b/README.md
index 1a77b05..f9fa622 100644
--- a/README.md
+++ b/README.md
@@ -37,7 +37,7 @@ Preparing the image is easy. Assuming you're on macOS:
 1. Insert your microSD card
 1. `$ diskutil list` to carefully check the correct device (/dev/disk2 is used as example below)
 1. `$ diskutil unmountDisk /dev/disk2` to prepare it for imaging
-1. `$ sudo dd bs=1m if=chilipie-kiosk-v1.2.1.img of=/dev/disk2` to flash the card
+1. `$ sudo dd bs=1m if=chilipie-kiosk-v1.2.1.img of=/dev/rdisk2` to flash the card (rdisk is faster raw access)
 1. Grab a coffee, this will take a while. On OSX, pressing Ctrl + t, will give you the amount of bytes transferred.
 1. `$ diskutil unmountDisk /dev/disk2` to safely eject the card
 1. Insert the microSD card to your Pi and power it up!