Ensure hard drives are connected.
Step 5: Repair Corrupted Boot Files via Windows Installation Media
Understanding the EFI Shell Version 2.60 / 2.70+ (Build 512, 2021) Error and How to Fix It
Look for codes labeled fs0: , fs1: , or fs2: . These represent readable file systems.
Commonly used for updating BIOS/firmware, particularly on Intel NUC or OEM motherboards.