Digital Rebar supports both PXE and UEFI iPXE booting, with pre-configured workflows for each. During discovery, systems obtain boot instructions by PXE and retrieve the next stage via TFTP or HTTP, then transition into Digital Rebar’s native discovery image, called Sledgehammer, for inventory and preparation. Boot instructions are dynamically generated based on system metadata and classification rules. The result is reliable, predictable boot behavior across mixed environments.