LPIC-1 System Architecture Practice Question
Which TWO of the following are required for a system to boot using UEFI?
⚠ Common exam trap
A common mix-up: candidates confuse UEFI requirements with legacy BIOS requirements, mistakenly thinking the MBR or a BIOS boot partition is needed, or assuming EFI stub support is mandatory when it is only an optional feature for direct kernel booting.
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
✓
The bootloader installed in the ESP
Option B is correct because UEFI firmware requires an EFI System Partition (ESP) formatted with FAT32 (or FAT16 on removable media) to store and load EFI boot applications. Option A is correct because the bootloader must be installed as an EFI application within the ESP (e.g., \EFI\BOOT\BOOTX64.EFI or a vendor path) for the firmware to locate and execute it. Option C is incorrect because the MBR boot code is a legacy BIOS mechanism, not used by UEFI. Option D is incorrect because a BIOS boot partition is a GPT partition used by GRUB in BIOS/GPT setups, not by UEFI. Option E is incorrect because EFI stub support is optional; UEFI can boot via a separate bootloader such as GRUB or systemd-boot without a kernel EFI stub.
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 bootloader installed in the ESP
Why this is correct
UEFI firmware reads bootloaders exclusively from the EFI System Partition, a FAT32 partition holding `.efi` executables. Without a bootloader placed there, the firmware finds no boot target, so installation into the ESP is mandatory for UEFI boot.
- ✓
An EFI System Partition (ESP) formatted with FAT32
Why this is correct
UEFI firmware reads bootloaders directly from a FAT32-formatted EFI System Partition, which the specification mandates as the only supported filesystem for the ESP. Without this partition, the firmware cannot locate or execute the bootloader, so the system fails to boot. This satisfies the stem's requirement for UEFI booting.
- ✗
The bootloader installed in the Master Boot Record (MBR)
Why it's wrong here
UEFI reads the bootloader from files on the EFI System Partition, not from the Master Boot Record, which is a legacy BIOS mechanism. It is tempting because MBR installation is the classic bootloader placement, and would be correct for a BIOS-firmware system booting from an MBR-partitioned disk.
- ✗
A BIOS boot partition
Why it's wrong here
A BIOS boot partition is required only by GRUB on BIOS/GPT systems, not by UEFI, which reads bootloaders from the EFI System Partition. It is tempting because it is a genuine partitioning requirement, and would be correct when booting legacy BIOS firmware with a GPT-partitioned disk.
- ✗
A kernel with EFI stub support
Why it's wrong here
EFI stub support lets the kernel be launched directly as an EFI executable, but UEFI firmware can instead load a separate bootloader such as GRUB from the EFI System Partition, so it is not required. It is tempting because it is a valid UEFI boot method, and would be correct where no separate bootloader is installed.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This LPIC-1 practice question is part of Courseiva's free LPI 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 LPIC-1 exam.