Download an operating system SD card image for each system (setup andtarget). For the “setup” system, this will beRaspbian Jessie (the full version, not “Lite”)…2016-05-10 or later, whatever the current release is. For the “target” system…this depends on the project…sometimes it’ll use the same Raspbian Jessie image, others will use Raspbian Jessie Lite (which lacks the GUI desktop and other features), or an entirely different SD card image from another project.

“Burn” each OS to an SD card using a tool such asEtcher or your utility of choice. For the “setup” system running full Raspbian, this requires an8 GB or larger card. For the “target” system, this depends…whatever the operating system requires, plus some extra working space for exchanging data…this could be as small as2 GB for something like Raspbian Jessie Lite, or up to32 GB maximum.

Keep track of which card is which…setup or target.

Boot and Configure Target System

Let’s set up thetarget system first, though I realize this is a bit counter-intuitive.

If your target system OS is based on a recent version ofRaspbian Jessie (or Lite), one nice feature is that it will boot onany Raspberry Pi board. So if your target hardware is a feature-limited Model A+ or a Pi Zero, you can boot on a more capable system (Pi 3, etc.) which is faster and more easily networked, then move the card later.

Go through the usualfirst-boot configuration process. For Raspbian, that means logging in with the default “pi” / “raspberry” username and password and running theraspi-config utility…

sudo raspi-config

sudo raspi-config

At the very least, you should expand the filesystem and set up theInternationalisation Options (especially the keyboard…if you’re getting unexpected characters when typing, this is why). Depending on the project this is going into, you may want to enable the camera, disable overscan (underAdvanced Options), etc. Totally depends on the project…choose your own adventure.

With the basic setup done (it may prompt you to reboot…this is fine), you may want to get the Pi connected to your network to download additional software, apply updates, etc. That’s beyond the scope of this guide, but you’ll find pointers in theLearn Raspberry Pi series.

Basically…your goal is to get the target system cardas close to finished as possible, all software installed and configured.

Once that’s ready, shut the system down gracefully…if working from the Raspbian command line, that’s…

sudo shutdown -h now

sudo shutdown -h now

After the system has halted (it takes about 20 seconds or so), disconnect power, remove the SD card andput it into the USB card reader.

Boot and Configure the Setup System

Now we’ll repeat that process for thesetup system…except this one will definitely be running thefull Raspbian Jessie OS, so you’ll have a mouse and GUI desktop for all of this.

Once the basic system is configured to your liking, set up networking. Sometimes this is as easy as plugging in an Ethernet cable or using the WiFi icon near the top-right of the screen.

This Pi system must have a working internet connection to complete this guide.

Back Up Target SD Card

Put the target system’s SD card in a USB reader and plug it into your normal desktop computer, or wherever you originally “burned” the SD card images.

Most utilities for burning SD cards also have a feature for working the other direction…they can back up an SD card to a file. (Etcher doesn’t have this feature yet, but other utilities do.)

Make a backup image of your target SD card before proceeding. We’ll be doing some serious shenanigans on the next page. There’s the possibility of messing things up, so this “save point” is insurance against having to start completely from scratch.

Once you have a backup, eject the USB reader and plug it into the setup system.