FreeBSD 13 remote install on IBM x3200 M3

Trying to install OS on a remote server have multiple constraints, especially if the machine does not have full function BMC to boot from a remote disk, or IP-KVM to enter BIOS/UEFI setup screen. This is not a step-to-step guide, but a summary of pitfalls to avoid when installing FreeBSD 13 on IBM x3200 M3 over PXE with limited BMC functionality, without a “virtual media key” on the motherboard.

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