220-1202 Practice Question: A technician is troubleshooting a Windows 10…

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

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  bootrec /fixmbr

  Why it's wrong here

  This command specifically rewrites the Master Boot Record (MBR) on the boot drive. While crucial for older BIOS-based systems to initiate the boot process by pointing to the active partition, it does not address issues within the Boot Configuration Data (BCD) store itself. Therefore, it would not directly resolve a 'Bootmgr is missing' error, which indicates a problem with the boot manager or its configuration, not necessarily the MBR.

• ✗

  bootrec /fixboot

  Why it's wrong here

  Executing `bootrec /fixboot` writes a new boot sector to the system partition. The boot sector's primary role is to load the Boot Manager (bootmgr.exe) from the system volume. Although a corrupt boot sector can prevent the system from finding the boot manager, this command does not rebuild the entire Boot Configuration Data (BCD) store, which defines the operating system entries. Thus, it's not the most direct solution for a BCD-specific error.

• ✓

  bootrec /rebuildbcd

  Why this is correct

  This command is the correct solution because it scans all disks for compatible Windows installations and then allows the user to add them to a newly created Boot Configuration Data (BCD) store. The BCD store contains critical boot information, including the location of the operating system files and boot options. Rebuilding the BCD directly addresses scenarios where the 'Bootmgr is missing' error occurs due to a corrupt, missing, or improperly configured BCD, ensuring the system can locate and load the Windows operating system.

• ✗

  sfc /scannow

  Why it's wrong here

  The System File Checker (`sfc /scannow`) is designed to scan for and repair corrupted or missing protected operating system files. While vital for system integrity, it operates at a higher level than the boot configuration and does not interact with the Master Boot Record, boot sector, or the Boot Configuration Data (BCD) store. Furthermore, running `sfc /scannow` from the Windows Recovery Environment typically requires specifying an offline Windows installation, making it less straightforward for immediate boot configuration fixes.

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