Quick Answer
The answer is `bootrec /rebuildbcd`, which is the correct command-line tool to use from the Windows Recovery Environment to repair a corrupted Boot Configuration Data (BCD). This command works by scanning all drives for compatible Windows installations and then prompting you to add each found installation to a new BCD store, effectively rebuilding the boot configuration from scratch. On the CompTIA A+ Core 2 220-1202 exam, this scenario often appears as a troubleshooting question where the system displays “Bootmgr is missing,” testing your ability to distinguish between recovery tools. A common trap is confusing `bootrec /rebuildbcd` with `bootrec /fixmbr` or `bootrec /fixboot`, which repair the master boot record or boot sector but do not rebuild the BCD store itself. Remember the memory tip: “Rebuild the BCD when the boot manager is missing—scan, list, and add.”
This 220-1202 practice question tests your understanding of windows command-line tools. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A customer calls the help desk stating that their computer displays 'Bootmgr is missing' and will not start Windows. You suspect the Boot Configuration Data (BCD) is corrupted. Which command-line tool should you use from the Windows Recovery Environment to repair the BCD?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "which command"
Why it matters: Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
chkdsk /r
Why wrong: Checks disk for bad sectors but does not repair boot configuration.
bootrec /rebuildbcd
Rebuilds the BCD store, fixing the 'Bootmgr is missing' error.
sfc /scannow
Why wrong: Repairs system files but requires Windows to be running.
diskpart
Why wrong: Manages disks and partitions, not boot configuration.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
bootrec /rebuildbcd
The correct answer is `bootrec /rebuildbcd`, which scans for Windows installations and rebuilds the BCD store. This is a standard repair for boot manager issues. Other commands are for disk checking, system file repair, or partition management.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
chkdsk /r
Why it's wrong here
Checks disk for bad sectors but does not repair boot configuration.
bootrec /rebuildbcd
Why this is correct
Rebuilds the BCD store, fixing the 'Bootmgr is missing' error.
Clue confirmation
The clue word "which command" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
sfc /scannow
Why it's wrong here
Repairs system files but requires Windows to be running.
diskpart
Why it's wrong here
Manages disks and partitions, not boot configuration.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the 220-1202 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Identify which 220-1202 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Windows Command-Line Tools — This question tests Windows Command-Line Tools — Read the scenario before looking for a memorised answer..
The correct answer is: bootrec /rebuildbcd — The correct answer is `bootrec /rebuildbcd`, which scans for Windows installations and rebuilds the BCD store. This is a standard repair for boot manager issues. Other commands are for disk checking, system file repair, or partition management.
Identify which 220-1202 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Yes — watch for: "which command". Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 19, 2026
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