LPIC-1 System Architecture Practice Question
A system boots in UEFI mode, and the administrator wants to add a new kernel entry to the EFI boot manager. Which tool should be used?
⚠ Common exam trap
Test-takers frequently confuse `grub2-install` (which installs a bootloader) with `efibootmgr` (which manages UEFI boot entries), mistakenly thinking that installing GRUB is the only way to add a kernel entry in UEFI mode.
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
✓
efibootmgr
In UEFI mode, the system's boot manager is stored in NVRAM, and `efibootmgr` is the standard Linux tool for creating, deleting, and modifying boot entries in the UEFI Boot Manager. It directly manipulates the UEFI Boot Manager variables (e.g., BootOrder, Boot####) via the efivars kernel interface, allowing the administrator to add a new kernel entry without relying on a bootloader like GRUB.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
efibootmgr
Why this is correct
Efibootmgr is the standard tool to create, delete, and modify EFI boot entries.
- ✗
grub2-install
Why it's wrong here
This installs GRUB to the disk, not directly manage EFI boot entries.
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lilo
Why it's wrong here
LILO is a legacy bootloader for BIOS systems.
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mknbi
Why it's wrong here
Mknbi is used for network boot images, not EFI boot entry management.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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