So I have an x64 laptop with no working USB ports, no optical drive and no HDD or SSD interface. I wish to boot it from my raspberry pi via PXE using ipv4. All I have is one raspberry pi 3B, the aforementioned laptop, and one Ethernet cable. I have followed a variety of tutorials found using search engines and spent days tweaking them, but the information seems to be incomplete or outdated. I would love someone to explain the steps I need to take to get this seemingly simple setup to work.
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You can setup a Raspberry Pi as master for Netbooting using systemd-networkd. You install a
tftp server to get the boot files by PXE from the master and then mount a NFS share for the root filesystem. Of course you need a stable network doing this. Using a wifi network is not advisable. I have made a feasibility study with Netbooting multiple “workers” RPi from a “master” RPi. Because it is using also RasPis as worker it does not exactly fit your needs using a laptop but it can show you how it works with a Raspberry Pi.