LPIC-2 Linux Kernel and System Startup Practice Question
A system fails to boot due to a corrupted initramfs. Which TWO methods can be used to recover? (Choose two.)
⚠ Common exam trap
Many candidates think 'init=/bin/bash' is a universal recovery method, but it fails to provide a functional environment for rebuilding initramfs because the root filesystem is not fully mounted and critical tools are missing.
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
✓
Use the rescue mode of the installation media (e.g., RHEL rescue, Ubuntu recovery)
Booting from installation media (e.g., RHEL rescue or Ubuntu recovery) provides a minimal environment that can mount the root filesystem, chroot into it, and then rebuild the initramfs using the system's own kernel and modules. This method does not require a working initramfs on the disk, as the rescue environment supplies its own kernel and initial RAM disk.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Edit GRUB command line to add 'init=/bin/bash' and then rebuild initramfs from that shell
Why it's wrong here
While init=/bin/bash gives a shell, the root filesystem may be read-only and tools may be missing; not reliable.
- ✗
Reinstall the kernel package from the GRUB command line using a network boot
Why it's wrong here
GRUB cannot run package managers; this is not possible.
- ✗
Use kexec to boot a different kernel
Why it's wrong here
kexec requires a running kernel; cannot be used from a failed boot.
- ✓
Use the rescue mode of the installation media (e.g., RHEL rescue, Ubuntu recovery)
Why this is correct
Rescue mode provides a minimal environment to repair the system.
- ✓
Boot with a live CD, chroot to the system, and rebuild initramfs
Why this is correct
This is a standard recovery method, giving full access to the system.
Go deeper
Related to this question
About these practice questions
One of 507 original LPIC-2 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This LPIC-2 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-2 exam.