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Beta Version of the Raspberry Pi Bootloader That Implements Network Installation

It's the age-old chicken-and-egg conundrum, which Raspberry Pi has now solved.

Beta Version of the Raspberry Pi Bootloader That Implements Network Installation

You've always had to use another computer to run Raspberry PiImager, or anything similar, in order to flash your OS system onto an SD card when you buy a new Raspberry Pi up until now. But, if you don't have another computer, how do you get the operating system onto an SD card in the first place?

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A beta version of the Raspberry Pi bootloader with network installation is now available, the new Network Install functionality allows you to download the Raspberry Pi Imager programme from the internet and install it directly on a Raspberry Pi 4, or a Raspberry Pi 400, using an Ethernet cable. The Raspberry Pi Imager application, which runs in memory on your Raspberry Pi, may then be used to flash the operating system onto a blank SD Card or USB device in the same way as normal.

What is the best way to use the network installer?

You'll need to install a beta version of the bootloader before you can test out the network installer.


“Raspberry Pi will start shipping Raspberry Pi boards with the new network bootloader pre-installed from the manufacturer, eliminating the need for this step.”

The new beta bootloader is being installed.


The simplest approach to upgrade the bootloader on your Raspberry Pi 4 or 400 is to use Raspberry Pi Imager to copy the appropriate software onto an SD card, either on your Raspberry Pi or on another computer. You'll need a blank SD card and a USB to SD card adaptor if you're using a Raspberry Pi or another computer without an SD card slot.

You should be aware that any existing data on the SD card you use to upgrade your Raspberry Pi's bootloader will be erased, so you shouldn't use the SD card you're presently using with your Raspberry Pi.

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Click the "Choose OS" button in the Imager programme and scroll down the "Operating System" list in the pop-up window. Then choose "Misc utility images," then "Beta Test Bootloader."


After that, you must choose the boot order. All of the options are the same, but the boot sequence will be different. Unless there's a good reason not to, you should generally choose "SD Card Boot."


After that, pick your media and burn the upgraded bootloader to your SD Card according to the standard steps.


After the SD card has done burning, turn off the Raspberry Pi and remove the existing SD card to a secure location. Restart the Raspberry Pi and insert the card you recently flashed using the Imager programme. The board LED will flicker periodically, and the screen will turn green, indicating that the new beta bootloader was successfully flashed.


If you ever wish to return your bootloader to the "Release" version, repeat the procedures above, but this time pick the top "Bootloader" option rather than the "Beta Test Bootloader" option.


Remove your bootloader update SD card and power off and on your board again.

Putting network boot to the test

Everything should be back to normal now that you've upgraded the bootloader.


The bootloader looks for software to load when a Raspberry Pi is turned on. It looks for an SD card first, then a USB flash drive, and so on. It will keep looping until it discovers a software to utilise. You'll see a diagnostics display on the screen after a few seconds, showing you what it's doing.


If you insert your original SD card (the one you were using before everything went wrong), your Raspberry Pi should boot back into the operating system normally.

This is still the case. The Raspberry Pi now checks for a connected keyboard as well.


You'll notice something different if you launch your Raspberry Pi without an SD Card in the slot, or with a blank SD Card, and if you have a keyboard connected.


The new network install page will appear if you have a keyboard attached (which is always the case with the Raspberry Pi 400) and the Raspberry Pi is unable to detect an operating system.

 

Your Raspberry Pi is still hunting for a functional operating system in the background. However, you may begin the network installation procedure by pressing and holding the Shift key for three seconds. When prompted, press Space to confirm that you wish to proceed, and it should request you to input an Ethernet cable.


Rather of connecting your Raspberry Pi to your wireless network, you'll need to manually connect it to your router using an Ethernet connection. An Ethernet cable with male RJ45 connectors on both ends is required. Most household routers have Ethernet cable connections on the back, so put one end of the cable into the back of the router and the other end into your Raspberry Pi.


It should begin downloading Raspberry Pi Imager once it detects a cable has been attached. If the download fails, you may try again by repeating the process.


It should eventually launch the Imager application, which will allow you to install a whole operating system onto a fresh blank SD card or USB stick.


If you haven't done so earlier, now is the time to put a new, blank SD card into the Raspberry Pi's SD card port. Pi Imager will allow you to download a copy of the operating system to your SD card and flash it directly from the internet.

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You shouldn't see the network install screen on startup now that you've installed software. You just need to remove any bootable discs if you wish to run it. Once Raspberry Pi Imager is up and running, you may re-insert them. However, be careful not to overwrite any functional drives you wish to preserve!


The network install beta documentation may be found here.


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