[Jonathan Bennet] showed that it’s possible to run a Raspberry Pi without an SD card by using the PXE boot feature, allowing it to boot and load its file system from a server on the same network ...

1. What to Do if Your Raspberry Pi 5 Won't Boot As the fifth full generation of Raspberry Pi boards, the Pi 5 is a little more reliable than earlier models.

Auto boot: can maximize uptime by making the Raspberry Pi run whenever there is sufficient battery power or when external input power is present.