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The Pi doesn't necessarily need an SD card. I'm running it on NFS, booted over the network. Works just fine. No need to worry about burning out the SD card.

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What component supports NFS booting? The bootloader is on the SD card, right?

I believe the RPi can boot directly from the network, but it does require a one-time config change that requires booting from the SD card once. After that, the SD card isn’t required for future reboots.

(Or actually even supported, IIRC)

I don't think the Pi 4 supports netboot yet[1].

[1] https://www.raspberrypi.org/documentation/hardware/raspberry...

I should have mentioned that this was currently only for the 3.

Hopefully that will get fixed soon.

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