Exam XK0-005 topic 1 question 88 discussion

So What’s the "CompTIA-Correct" Answer? According to CompTIA exam philosophy: F. Boot system on a LiveCD/ISO → ✔️ Absolutely correct and expected A. grub-install --root-directory=/mnt and reboot → ✔️ Also correct in the eyes of the exam ⚠️ Why Not B on the Exam? grub-install /dev/sdX assumes a working mount or chroot — CompTIA wants the “safe, explicit method”. They want to see you understand the full GRUB repair process: Boot LiveCD Mount system manually Use --root-directory=/mnt to avoid chrooting Even though B is technically valid, CompTIA tends to prefer explicit and less assumption-based commands.

B. Execute grub-install /dev/sdX and reboot. This command reinstalls the GRUB bootloader on the specified disk (/dev/sdX). Replace /dev/sdX with the appropriate device identifier for the system's boot disk (e.g., /dev/sda, /dev/nvme0n1). After executing the command, reboot the system and check if it successfully boots. F. Boot the system on a LiveCD/ISO. Booting the system from a LiveCD/ISO allows you to access the system's filesystem and repair the GRUB bootloader. Once booted into the LiveCD/ISO environment, you can mount the system's root partition, chroot into it, and then reinstall GRUB using the appropriate commands (e.g., grub-install and update-grub). After performing the necessary repairs, restart the system and check if it boots correctly.

B. Execute grub-install /dev/sdX and reboot. This action involves reinstalling the GRUB bootloader on the specified device (/dev/sdX). By reinstalling GRUB, it can help resolve any issues related to the bootloader and allow the system to boot successfully. F. Boot the system on a LiveCD/ISO. Booting the system using a LiveCD/ISO allows accessing the system's filesystem from an external environment. Once booted into the LiveCD/ISO, you can perform various troubleshooting steps such as checking the filesystem, repairing any errors, or modifying configuration files if necessary.

Option F "Boot the system on a LiveCD/ISO" would help along with option B, as booting the system on a LiveCD/ISO would allow the administrator to access the file system and make necessary changes to fix the issue. Additionally, the administrator could use the bootable LiveCD/ISO to run the grub-install command with the appropriate arguments, such as "/dev/sdX" (Option B), to install GRUB on the appropriate disk. This would help resolve the issue with the missing partition and allow the system to boot properly.

B)Execute grub-install /dev/sdX and reboot. F)Boot the system on a LiveCD/ISO.

I think its BF, but most resources state to: 1. Boot from live CD or ISO 2. Mount root partition 3. Reinstall GRUB

Does anyone have any idea if B and D are correct?