- A
diskpart
Why wrong: Incorrect. diskpart is used for disk and partition management, not boot repair.
- B
bootrec
Correct. bootrec with /fixboot or /rebuildbcd repairs the boot configuration data (BCD) and fixes boot manager issues.
- C
sfc /scannow
Why wrong: Incorrect. sfc scans and repairs system files, but it cannot fix boot manager corruption directly.
- D
chkdsk /f
Why wrong: Incorrect. chkdsk checks for file system errors but does not repair boot configuration issues.
Question 574 of 750
Using Bootrec to Fix Boot Manager Issues
This 220-1202 practice question tests your understanding of windows command-line tools. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
After installing a new application, a user's Windows 10 system fails to boot and displays a 'Bootmgr is missing' error. Which command-line tool should you use from the Windows Recovery Environment to repair the boot configuration?
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.
Quick Answer
The answer is bootrec, the command-line tool you should use from the Windows Recovery Environment to repair the boot configuration and fix a 'Bootmgr is missing' error. This tool is specifically designed to address boot-related issues by rewriting the master boot record, fixing the boot sector, or rebuilding the Boot Configuration Data (BCD) store, which is exactly what is needed when a new application corrupts the boot manager. On the CompTIA A+ Core 2 220-1202 exam, this scenario tests your ability to differentiate between recovery tools—a common trap is confusing bootrec with sfc or chkdsk, but remember that sfc repairs system files and chkdsk checks disk integrity, neither of which directly rebuilds the boot manager. The key options here are /fixboot to write a new boot sector and /rebuildbcd to scan for and restore missing Windows installations. A helpful memory tip: think of bootrec as the "boot repair" specialist—if the error says "Bootmgr," you bootrec it.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
bootrec
The 'Bootmgr is missing' error indicates that the Boot Manager (bootmgr) is corrupted or the Boot Configuration Data (BCD) is damaged. The bootrec command, specifically with the /FixBoot, /FixMbr, and /RebuildBcd switches, is designed to repair the boot configuration and restore the boot manager from the Windows Recovery Environment.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
diskpart
Why it's wrong here
Incorrect. diskpart is used for disk and partition management, not boot repair.
- ✓
bootrec
Why this is correct
Correct. bootrec with /fixboot or /rebuildbcd repairs the boot configuration data (BCD) and fixes boot manager issues.
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
Incorrect. sfc scans and repairs system files, but it cannot fix boot manager corruption directly.
- ✗
chkdsk /f
Why it's wrong here
Incorrect. chkdsk checks for file system errors but does not repair boot configuration issues.
Common exam traps
Common exam trap: answer the scenario, not the keyword
CompTIA often tests the distinction between file system repair (chkdsk) and boot configuration repair (bootrec), leading candidates to mistakenly choose chkdsk when the error is clearly a boot manager issue.
Detailed technical explanation
How to think about this question
The bootrec tool interacts with the BCD store located in the EFI System Partition (ESP) on UEFI systems or the System Reserved partition on BIOS systems. The /RebuildBcd switch scans all drives for Windows installations and allows you to rebuild the BCD store from scratch, which is critical when the store is missing or corrupted. In real-world scenarios, bootrec /FixMbr rewrites the master boot record without altering the partition table, while /FixBoot writes a new boot sector compatible with the current partition style.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
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
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
Windows Command-Line Tools — study guide chapter
Learn the concepts, then practise the questions
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FAQ
Questions learners often ask
What does this 220-1202 question test?
Windows Command-Line Tools — This question tests Windows Command-Line Tools — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: bootrec — The 'Bootmgr is missing' error indicates that the Boot Manager (bootmgr) is corrupted or the Boot Configuration Data (BCD) is damaged. The bootrec command, specifically with the /FixBoot, /FixMbr, and /RebuildBcd switches, is designed to repair the boot configuration and restore the boot manager from the Windows Recovery Environment.
What should I do if I get this 220-1202 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
1 more ways this is tested on 220-1202
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A technician is troubleshooting a Windows 10 system that fails to boot with a 'Bootmgr is missing' error. They need to repair the boot configuration data (BCD) from the Windows Recovery Environment. Which command should they use?
medium- A.bootrec /fixmbr
- B.bootrec /fixboot
- ✓ C.bootrec /rebuildbcd
- D.sfc /scannow
Why C: The 'Bootmgr is missing' error indicates that the Boot Configuration Data (BCD) store is corrupted or missing. The `bootrec /rebuildbcd` command scans all disks for Windows installations and allows you to rebuild the BCD store from scratch, which directly resolves this issue. In contrast, `bootrec /fixmbr` and `bootrec /fixboot` repair the master boot record and boot sector, respectively, but do not rebuild the BCD store.
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Last reviewed: Jul 4, 2026
This 220-1202 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 220-1202 exam.
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