[tutorial] Linux Jargon Buster: What is Grub in Linux? What is it Used for?

4 messages · started by Devi Garcia on Nov 17, 2020

[tutorial] Linux Jargon Buster: What is Grub in Linux? What is it Used for?

From Devi Garcia · Nov 17, 2020




What is GRUB?

GRUB is complete program for loading and managing boot. It is the most common bootloader for Linux distributions. A bootloader is the first software that runs when a computer starts. It loads the kernel of the operating system and then the kernel initializes the rest of the operating systems (shell, display managerdesktop environment etc).

Boot loader vs boot manager

I didn’t want to confuse you at this stage but I see no option to avoid bringing this topic. There is a blur line between a bootloader and a boot manager.

You already know that bootloader starts first and then loads the kernel into memory and executes it. A boot manager program allows you to choose between operating systems (if there are more than one OS on your system). A boot manager doesn’t load the OS directly,

With Linux kernel version 3.3, the Linux kernel includes a built-in EFI bootloader. In fact, any operating system that is capable of working EFI system includes an EFI bootloader. In EFI capable systems, the firmware reads the EFI System Partition (ESP) for the EFI files for boot information.

read more: https://itsfoss.com/what-is-grub/

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[tutorial] Linux Jargon Buster: What is Grub in Linux? What is it Used for?

From Devi Garcia · Nov 17, 2020




What is GRUB?

GRUB is complete program for loading and managing boot. It is the most common bootloader for Linux distributions. A bootloader is the first software that runs when a computer starts. It loads the kernel of the operating system and then the kernel initializes the rest of the operating systems (shell, display managerdesktop environment etc).

Boot loader vs boot manager

I didn’t want to confuse you at this stage but I see no option to avoid bringing this topic. There is a blur line between a bootloader and a boot manager.

You already know that bootloader starts first and then loads the kernel into memory and executes it. A boot manager program allows you to choose between operating systems (if there are more than one OS on your system). A boot manager doesn’t load the OS directly,

With Linux kernel version 3.3, the Linux kernel includes a built-in EFI bootloader. In fact, any operating system that is capable of working EFI system includes an EFI bootloader. In EFI capable systems, the firmware reads the EFI System Partition (ESP) for the EFI files for boot information.

read more: https://itsfoss.com/what-is-grub/

image.png

View original on FreeLists

Re: [tutorial] Linux Jargon Buster: What is Grub in Linux? What is it Used for?

From Ron Yonker · Nov 19, 2020

Thanks for the info. Heard about Linux long ago. Reminds me of DOS many years ago.  As you can tell I don't know anything about Linux. Have a Macbook.  Liked it until Apple updated from macOS Mojave to a newer version which caused problems.  Tech person said the way it was implemented on the hard drive was going to be that way from now on. Decide to check into Linux which I had almost forgotten about. So I'm going to learn more about it.

Thanks,

On Tue, Nov 17, 2020 at 10:42 AM Devi Garcia <asphyxiated.god@gmail.com> wrote:
Quoted reply (4 lines)
What is GRUB?   GRUB  is complete program for loading and managing boot. It is the most common bootloader for Linux distributions. A bootloader is the first software that runs when a computer starts. It loads the  kernel of the operating system  and then the kernel initializes the rest of the operating systems (shell,  display manager ,  desktop environment  etc).  Boot loader vs boot manager  I didn’t want to confuse you at this stage but I see no option to avoid bringing this topic. There is a blur line between a bootloader and a boot manager.
You already know that bootloader starts first and then loads the kernel into memory and executes it. A boot manager program allows you to choose between operating systems (if there are more than one OS on your system). A boot manager doesn’t load the OS directly,
With Linux kernel version 3.3, the  Linux kernel includes a built-in EFI bootloader . In fact, any operating system that is capable of working  EFI system includes an EFI bootloader . In EFI capable systems, the firmware reads the EFI System Partition (ESP) for the EFI files for boot information.



What is GRUB?

GRUB is complete program for loading and managing boot. It is the most common bootloader for Linux distributions. A bootloader is the first software that runs when a computer starts. It loads the kernel of the operating system and then the kernel initializes the rest of the operating systems (shell, display managerdesktop environment etc).

Boot loader vs boot manager

I didn’t want to confuse you at this stage but I see no option to avoid bringing this topic. There is a blur line between a bootloader and a boot manager.

You already know that bootloader starts first and then loads the kernel into memory and executes it. A boot manager program allows you to choose between operating systems (if there are more than one OS on your system). A boot manager doesn’t load the OS directly,

With Linux kernel version 3.3, the Linux kernel includes a built-in EFI bootloader. In fact, any operating system that is capable of working EFI system includes an EFI bootloader. In EFI capable systems, the firmware reads the EFI System Partition (ESP) for the EFI files for boot information.

read more: https://itsfoss.com/what-is-grub/

image.png

View original on FreeLists

Re: [tutorial] Linux Jargon Buster: What is Grub in Linux? What is it Used for?

From Charles Breaux · Nov 20, 2020

hey Ron, saw your post...I have been using ubuntu now for about 3 years on several different PCs and recently changed over my mac mini. One suggestion: I kept the hard drive with my "mavericks" as an external HD that I can boot off of it. There are still things that I need the mac OS for, like accessing my iPods etc. I also found that I never could make a bootable install flashdrive for my macs. Everytime I tried it would destroy the boot sector on the flashdrive when I tried to use it. You have to burn an install DVD, and disable some security feature (sorry can't remember how to do that) in the bios before you can install linux on the mac. I abandoned Microsoft when windows 95 came out, now mac is just as bad as windows...or worse in some cases. Welcome to Linux and your steep learning curve to geeckhood.

On Thu, Nov 19, 2020 at 8:50 PM Ron Yonker <rukind7@gmail.com> wrote:
Quoted reply (8 lines)
Thanks for the info. Heard about Linux long ago. Reminds me of DOS many years ago.  As you can tell I don't know anything about Linux. Have a Macbook.  Liked it until Apple updated from macOS Mojave to a newer version which caused problems.  Tech person said the way it was implemented on the hard drive was going to be that way from now on. Decide to check into Linux which I had almost forgotten about. So I'm going to learn more about it.
Thanks,
Ron( rukind7@gmail.com )
Thanks for the info. Heard about Linux long ago. Reminds me of DOS many years ago.  As you can tell I don't know anything about Linux. Have a Macbook.  Liked it until Apple updated from macOS Mojave to a newer version which caused problems.  Tech person said the way it was implemented on the hard drive was going to be that way from now on. Decide to check into Linux which I had almost forgotten about. So I'm going to learn more about it.

Thanks,

On Tue, Nov 17, 2020 at 10:42 AM Devi Garcia <asphyxiated.god@gmail.com> wrote:



What is GRUB?

GRUB is complete program for loading and managing boot. It is the most common bootloader for Linux distributions. A bootloader is the first software that runs when a computer starts. It loads the kernel of the operating system and then the kernel initializes the rest of the operating systems (shell, display managerdesktop environment etc).

Boot loader vs boot manager

I didn’t want to confuse you at this stage but I see no option to avoid bringing this topic. There is a blur line between a bootloader and a boot manager.

You already know that bootloader starts first and then loads the kernel into memory and executes it. A boot manager program allows you to choose between operating systems (if there are more than one OS on your system). A boot manager doesn’t load the OS directly,

With Linux kernel version 3.3, the Linux kernel includes a built-in EFI bootloader. In fact, any operating system that is capable of working EFI system includes an EFI bootloader. In EFI capable systems, the firmware reads the EFI System Partition (ESP) for the EFI files for boot information.

read more: https://itsfoss.com/what-is-grub/

image.png

View original on FreeLists


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