Diagnostics and remediation for a split-boot architecture

An Information Handling System (IHS), comprising:

• a printed circuit board;
• a processor coupled to the printed circuit board;
• and
• a memory coupled to the processor, wherein the memory comprises program instructions stored thereon that, upon execution by the processor, cause the IHS to:
• send, in a split boot architecture, one or more commands from executed firmware onboard the printed circuit board to executed extended firmware via a communication protocol, wherein the extended firmware resides on a Non-Volatile Memory Express (“NVMe”) component;
• and
• based, at least in part, on a response or a lack of response from the executed extended firmware to the one or more commands, perform one or more responsive actions, wherein the one or more responsive actions comprise:
• perform a reset of the extended firmware when the response from the extended firmware indicates normal operation;
• and
• re-scan the component comprising the extended firmware when the response from the extended firmware indicates normal operation;
• wherein the split boot architecture comprises boot firmware code split into the firmware onboard the printed circuit board and the extended firmware.