LPIC-1 GRUB Rescue Shell Practice Question
Which TWO conditions would cause the boot process to fall back to the GRUB rescue shell? (Choose two.)
⚠ Common exam trap
The trap is that candidates often think a missing grub.cfg leads to the rescue shell, but it actually drops to the normal GRUB shell. The rescue shell is specifically for when GRUB cannot load its own modules.
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 GRUB modules are not loaded from the correct path.
The GRUB rescue shell is entered when the core image cannot locate its modules, typically due to an incorrect module path. This prevents GRUB from loading its normal configuration, causing a fallback to the minimal rescue shell. Missing or corrupt grub.cfg, on the other hand, leads to the GRUB normal shell (grub>), not the rescue shell. Other issues like missing kernel, initramfs, or BIOS failure occur after GRUB or before it starts, so they do not trigger the rescue shell.
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 GRUB modules are not loaded from the correct path.
Why this is correct
Correct. If the modules are not found at the expected path, GRUB cannot proceed beyond the rescue shell.
- ✗
The kernel image is not found in /boot.
Why it's wrong here
Incorrect. A missing kernel image would cause a boot failure after GRUB has loaded, not a fallback to the rescue shell.
- ✗
The BIOS cannot find a bootable device.
Why it's wrong here
Incorrect. If the BIOS cannot find a bootable device, GRUB is never loaded, so no rescue shell is entered.
- ✗
The initramfs is missing or corrupt.
Why it's wrong here
Incorrect. A missing or corrupt initramfs causes a kernel panic after the kernel is loaded, not a rescue shell fallback.
- ✗
The /boot/grub/grub.cfg file is missing or corrupt.
Why it's wrong here
Incorrect. A missing or corrupt grub.cfg triggers the GRUB normal shell (command-line prompt), not the rescue shell.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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