Expanding on mikerr's suggestion earlier, by enabling GPIO selection of what to boot from it should be possible to add a microcontroller supervisor which can disable SD Card booting and enable PXE booting at initial power-on. If PXE booting is not indicated as successful to the supervisor that can ...

2. Alternatively via software: renaming /boot/bootcode.bin (which can be done on the pi itself) would also make it failover into pxe at next boot. I would like to go the software route. I've been thinking along the lines of your second suggestion. I was thinking that I would always PXE boot (never ...

https://www.raspberrypi.org/documentation/hardware/raspberrypi/bootmodes/README.md Yes, I had read that before posting. From that doc the answer seems to be that you cannot control boot order. The closest you can get is to use hardware pins to enable/disable different boot options, but even then th...

I realize this has been asked before in a different form, but I couldn't quite follow the discussion. Is there a way to make the board try to boot from PXE before it boots from the microSD? I have a cluster of remote raspberry pis, and i'd like to occasionally reinstall them using PXE. Specifically,...