The Raspberry Pi is an incredible little computer made up of a components and connectors on an unfeasibly small printed circuit board that is approximately the dimensions of a credit card. Depending upon your intended use, your Rasberry Pi may have a keyboard, monitor and mouse added. Regardless of your intended use, you are going to need an SD (Secure Digital) card on which to install an operating system.
This tutorial describes how to install an operating system onto an SD card for use in your Raspberry Pi.
What You Need to Do and Why
In order to get up and running with your Raspberry Pi, you will first need to flash an SD card. Whilst your Mac, or PC, uses a magnetic hard disc drive (HDD) or a Solid State Drive (SSD), your Raspberry Pi has no internal storage of its own.
Instead, the Raspberry Pi uses a Secure Digital (SD) card, such as is common as storage in many digital cameras.
This means that the Raspberry Pi will run from whatever operating system you install on an SD card. You can do from your main computer regardless of whether you are using Apple OS X, Linux or Microsoft Windows.
Before You Flash an SD Card
Download an Operating System
For the purposes of this tutorial I will be downloading Raspian, for Raspberry Pi.
The download will be compressed as a .zip file. You will need to extract to .img or .iso file before proceeding.
Tip: You can download a number of different operating systems, including RISC OS, Raspian, Raspbmc, Openelec and pidora, from the Raspberry Pi downloads site or you can download the NOOBS, New Out Of Box Software
Good Installation Guide:
The easiest method on the Mac is to install Apple Pi Baker, it’s got a simple user interface so you don’t have to muck about with command lines.
Now it’s time to connect all the peripherals and boot our Raspberry Pi up.