The answer is that the new SSD is not partitioned with GPT or lacks an EFI system partition, which is why it isn't showing in the UEFI boot order. UEFI firmware requires a GUID Partition Table (GPT) and a dedicated EFI System Partition (ESP) to recognize a drive as bootable; without these, the SSD remains invisible to the boot manager, causing the system to default to the old HDD. On the CompTIA A+ Core 1 220-1201 exam, this scenario tests your understanding of UEFI boot requirements versus legacy BIOS, often trapping candidates who assume any formatted drive will appear in the boot list. A common memory tip is "GPT for UEFI, MBR for BIOS"—if you see a new SSD missing from UEFI, always check the partition style first.
220-1101 BIOS / UEFI Practice Question
This 220-1201 practice question tests your understanding of bios / uefi. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 technician is upgrading a workstation from a 500 GB HDD to a 1 TB SSD. After installing the SSD, the system boots into the old OS from the HDD instead of the new SSD. The boot order in UEFI shows only the HDD. What is the most likely reason?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The SSD is not partitioned with GPT or lacks an EFI system partition
The SSD may not be initialized with a GPT partition table or may lack an EFI system partition, making it invisible to the UEFI boot manager. The technician should check the partition style and ensure the SSD is properly formatted for UEFI boot. This question tests advanced knowledge of UEFI boot requirements.
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.
✗
The SSD is not connected to the fastest SATA port
Why it's wrong here
Port speed does not affect boot visibility; the drive would still appear in the boot list.
✓
The SSD is not partitioned with GPT or lacks an EFI system partition
Why this is correct
UEFI requires a GPT disk with an EFI system partition to recognize it as a bootable device.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The HDD has a higher priority in the boot order
Why it's wrong here
If the SSD is not listed at all, it is not a priority issue; it means the firmware does not detect it as bootable.
✗
The SSD needs a firmware update
Why it's wrong here
While possible, firmware updates are rarely required for basic boot detection; partition structure is the common cause.
Common exam traps
Common exam trap: answer the scenario, not the keyword
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
How to think about this question
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.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 220-1201 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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 220-1201 question in full detail.
Identify which 220-1201 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.
BIOS / UEFI — This question tests BIOS / UEFI — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The SSD is not partitioned with GPT or lacks an EFI system partition — The SSD may not be initialized with a GPT partition table or may lack an EFI system partition, making it invisible to the UEFI boot manager. The technician should check the partition style and ensure the SSD is properly formatted for UEFI boot. This question tests advanced knowledge of UEFI boot requirements.
What should I do if I get this 220-1201 question wrong?
Identify which 220-1201 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.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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