GRUB Queries ?! Post: 302883792

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Operating Systems Linux Debian GRUB Queries ?! Post 302883792 by sreyan32 on Thursday 16th of January 2014 04:50:21 AM

01-16-2014

Registered User

GRUB Queries ?!

Hello,
I am posting the following questions here because I need them answered by people who have actually done a lot of work in GRUB. DO NOT GIVE ME GUESS ANSWERS PLEASE. Feel free to redirect me if this is not the right place to ask these questions.

Can I download GRUB separately from GNU GRUB - Obtaining GRUB ? If so why do Linux distributions such as Debian have their own versions of GRUB ? ie. Debian -- Details of package grub-efi-amd64 in squeeze. What is the difference and why are both required ?
Does the recent version of GRUB require Linux configuration files before it can boot Linux ? Is that the reason why every Linux distro has its own version of GRUB ?
If GRUB requires Linux configuration files then how does it boot Windows without similar config files ? And if it is possible to boot an OS like Windows with any extra files in the bootloader why isn't the same thing done for any Linux distro ? wouldn't that make things more streamlined ?
Do all the recent versions of GRUB support EFI booting ?
I have installed Debian on my pc without GRUB thus I can't access it. Can GRUB be installed now manually so that I can dual boot Windows and Debian in EFI mode ?

I am really confused about these basic things. I need to get these things cleared up before I ask further questions in this forum.

sreyan32

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LEARN ABOUT LINUX

installgrub

installgrub(1M)                                                                                                                    installgrub(1M)

NAME

       installgrub - install GRUB in a disk partition or a floppy

SYNOPSIS

       /sbin/installgrub [-fm] stage1 stage2 raw-device

       The installgrub command is an -only program. GRUB stands for GRand Unified Bootloader.

       installgrub  installs  GRUB  stage  1  and  stage  2  files on the boot area of a disk partition. If you specify the -m option, installgrub
       installs the stage 1 file on the master boot sector of the disk.

       The installgrub command accepts the following options:

       -f

           Suppresses interaction when overwriting the master boot sector.

       -m

           Installs GRUB stage1 on the master boot sector interactively.

       The installgrub command accepts the following operands:

       stage1

           The name of the GRUB stage 1 file.

       stage2

           The name of the GRUB stage 2 file.

       raw-device

           The name of the device onto which GRUB code is to be installed. It must be a character device that is readable and writable.  For  disk
           devices,  specify  the  slice  where  the  GRUB  menu  file  is  located.  (For Solaris it is the root slice.) For a floppy disk, it is
           /dev/rdiskette.

       Example 1: Installing GRUB on a Hard Disk Slice

       The following command installs GRUB on a system where the root slice is c0d0s0:

       example# /sbin/installgrub /boot/grub/stage1 
                /boot/grub/stage2 /dev/rdsk/c0d0s0

       Example 2: Installing GRUB on a Floppy

       The following command installs GRUB on a formatted floppy:

       example# mount -F pcfs /dev/diskette /mnt
       # mkdir -p /mnt/boot/grub
       # cp /boot/grub/* /mnt/boot/grub
       # umount /mnt
       # cd /boot/grub
       # /sbin/installgrub stage1 stage2 /dev/rdiskette

       /boot/grub

           Directory where GRUB files reside.

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWcsu                      |
       +-----------------------------+-----------------------------+
       |Interface Stability          |Evolving                     |
       +-----------------------------+-----------------------------+

       boot(1M), fdisk(1M), fmthard(1M), kernel(1M), attributes(5)

       Installing GRUB on the master boot sector (-m option) overrides any boot manager currently installed on the machine. The system will always
       boot the GRUB in the Solaris partition regardless of which fdisk partition is active.

                                                                    24 May 2005                                                    installgrub(1M)