Which of the following commands installs the GRUB boot files into the currently active file systems and the boot loader into the first partition of the first disk?
The question says "currently active file systems", if installed on / dev / sda1 it will need to be added manually to the drive's boot loader after installation. Correct answer is A
That is correct B is the answer.
https://debian-handbook.info/browse/sv-SE/stable/sect.config-bootloader.html#:~:text=Each%20partition%20is%20represented%20by%20its%20number%20on%20the%20disk%20on%20which%20it%20resides%3A%20for%20instance%2C%20/dev/sda1%20is%20the%20first%20partition%20on%20the%20first%20disk
https://wiki.archlinux.org/title/GRUB#:~:text=Make%20sure%20to,the%20boot%20loader
grub-install current is invalid, A is wrong since the partition is not specified
The correct answer is A. grub-install /dev/sda
Explanation:
grub-install: This command is used to install the GRUB boot loader configuration files into the Master Boot Record (MBR) or GPT header of a hard disk.
/dev/sda: This refers to the first hard disk in the system.
Why are the other options wrong?
B. grub-install /dev/sda1: Installs GRUB only on the first partition of the hard disk, not in the MBR or GPT header.
C. grub-install current /dev/sda0: “current” is not a valid parameter for grub-install.
D. grub-install /dev/sda0: Installs GRUB only on the first partition of the hard disk.
E. grub-install current /dev/sda1: “current” is not a valid parameter for grub-install.
Note: Installing GRUB into the MBR may affect the booting of other operating systems on the hard disk. It is therefore important to read the documentation carefully and understand the implications of the installation before running this command.
Is saying Google's Gemini 2.0.. KI/AI is often generating wrong answers at all, even the question is clear. But it's wrong, reading the questions context "..and the boot loader into the first partition of the first disk?"; where first partition on first disk is /dev/sda1; verified against RedHat documentation https://www.redhat.com/en/blog/partitions-fdisk; disks partions created with fdisk start always with number 1, not with 0. So answer B is it, even if it expects a chainload of boot loaders and a boot loader that is already installed in MBR of disk /dev/sda.
The 100% correct answer is "B" as i had this question in the exam 2024/03/19 !
- "A" would be only correct if the question would ask for Grub MBR installation ! ( grub-install /dev/sda )
- "B" asks for Grub Bootloader installation on 1st Partition on 1st disk. In this case it is /dev/sda1 !
https://wiki.centos.org/HowTos(2f)GrubInstallation.html
All other answers are wrong !
The correct command to install GRUB boot files into the currently active file systems and the boot loader into the first partition of the first disk is B. grub-install /dev/sda1.
Here's a breakdown of why the other options are incorrect:
A. grub-install /dev/sda: This command would install GRUB onto the entire disk (/dev/sda), not specifically onto the first partition (/dev/sda1). This is generally not recommended as it can overwrite data on other partitions.
C. grub-install current /dev/sda0: The "current" argument is not valid for grub-install. It's used for other commands like grub-mkconfig.
D. grub-install /dev/sda0: This command would attempt to install GRUB onto the master boot record (MBR) of the disk, which is not the correct location for GRUB2 (the modern version of GRUB). GRUB2 typically resides in the first partition.
E. grub-install current /dev/sda1: As mentioned earlier, "current" is not a valid argument for grub-install.
It is A. Why?
Option B (grub-install /dev/sda1) is incorrect because it installs the boot loader to the first partition of the first disk, which is not where the boot loader should be installed.
I believe the correct answer is A: grub-install /dev/sda
"run grub-install, pointing it to the boot DEVICE (NOT the partition) and the directory where the boot partition is mounted."
source: LPIC -1 (101) Version 5.0 Learning Materials, Page 71
This is what GPT-3 tells me. For example, to install the GRUB boot files and boot loader into the first partition of the first disk, you might use a command like this:
sudo grub-install /dev/sda1
A resposta correta é B grub-install /dev/sda1 Instale os arquivos Grub no diretório /boot/grub da partição atual. Instale o carregador de inicialização na primeira partição do primeiro disco rígido.
https://wiki.centos.org/HowTos/GrubInstallation#Installing_Grub_using_grub-install
This is a "tricky" question because it's asking about the grub installation and also It refers to the first partition, which all we know it's /dev/sda1, but the main idea of the question is about where the grub will be installed and it's focused on this last. So, starting from this point, grub only can be installed by referring to a device and not to a partition. In fact, on page 78 of the LPIC-1 book, it says: "To install GRUB Legacy on a disk from a running system we will use the grub-install utility. The
basic command is grub-install DEVICE where DEVICE is the disk where you wish to install GRUB Legacy. An example would be /dev/sda." In conclusion, the right answer is A.
I think the corrext answer is A:
The usage is basically very simple. You only need to specify one argument to the program, namely, where to install the boot loader. The argument has to be either a device file (like ‘/dev/hda’). For example, under Linux the following will install GRUB into the MBR of the first IDE disk:
# grub-install /dev/sda
https://www.gnu.org/software/grub/manual/grub/html_node/Installing-GRUB-using-grub_002dinstall.html
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