According to the CHFI v11 Operating System Forensics module, understanding the Windows boot process is essential for diagnosing boot failures and identifying potential tampering, rootkits, or boot-level malware.
In systems using the BIOS-MBR boot method , the boot sequence follows a well-defined order.
After the BIOS (Basic Input/Output System) completes hardware initialization and performs the Power-On Self-Test (POST), its next responsibility is to locate a bootable device based on the configured boot order.
Once a valid boot device is found, the BIOS loads the Master Boot Record (MBR) from the first sector of that device into memory and transfers execution control to it. This step is critical because the MBR contains the boot code responsible for locating the active partition and invoking the next stage of the boot process.
Only after the MBR executes does the Windows Boot Manager (bootmgr) load, followed later by the Windows OS loader (winload.exe), which then loads ntoskrnl.exe and the Hardware Abstraction Layer (HAL) . Therefore, options B, C, and D represent later stages in the boot process and could not occur immediately after BIOS initialization.
CHFI v11 explicitly covers this sequence under Windows Boot Process: BIOS-MBR Method , emphasizing that failures occurring immediately after BIOS initialization typically point to issues with the MBR or bootable partition discovery .
Hence, the correct and CHFI v11-verified answer is Option A: The boot manager would locate the bootable partition and load the MBR .