XK0-006 Troubleshooting Practice Question
A server fails to boot with a kernel panic after a system update. The administrator suspects a corrupt initramfs. Which GRUB boot parameter should be added temporarily to boot into an emergency shell where the filesystem can be repaired?
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
✓
rd.break
The `rd.break` parameter causes systemd to break before the initramfs transitions to the real root, providing an emergency shell for repair. 'single' boots to single-user mode but requires a working initramfs.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
rd.break
Why this is correct
Correct. rd.break drops to a shell before the root filesystem is mounted, allowing initramfs repair.
- ✗
emergency
Why it's wrong here
Emergency target is a systemd target but requires initramfs to pass control to systemd.
- ✗
single
Why it's wrong here
Single-user mode requires a successful initramfs transition; it may not help if initramfs is corrupt.
- ✗
nomodeset
Why it's wrong here
nomodeset disables kernel mode-setting for graphics issues, not for initramfs problems.
Go deeper
Related to this question
Learn chapter
Navigating the Filesystem
Key term
Shell
A shell is a computer program that provides a user interface to access an operating system's services, typically by accepting text commands.
Key term
User
A user is any person, system, or device that interacts with an IT service, resource, or identity system, typically authenticated through credentials and authorized to perform specific actions.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This XK0-006 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 XK0-006 exam.