Posts from the ‘GRUB2’ Category

Triple Booting Arch,Ubuntu and Windows

So I wanted to install Ubuntu 9.10 and see how it “fails to” perform on my hard disk [as previously I tested he RCs in vbox within Arch]. Ubuntu boots up quite slow. At first a white ubuntu orb like logo appears and then the xsplash kicks in and after a while login screen comes and then it takes you to your desktop. However, the shutdown and reboot are way faster than any others’ I have seen. Just click and bam you are out of ubuntu. Anyway, I had Arch and Windows pre-installed on my hard disk and I just wanted to install ubuntu in a spare partition I had. Here is the partitioning scheme:

df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/sda3              28G   19G  8.1G  70% /            <—–Arch’s Root
none                 1005M  140K 1004M   1% /dev
none                 1005M     0 1005M   0% /dev/shm
/dev/sda5             7.4G  3.1G  4.0G  44% /pkg
/dev/sda1             9.4G  5.9G  3.5G  64% /windows
/dev/sda2             9.2G  3.2G  5.6G  37% /ubuntu
/dev/sda6   swap        <——– Common swap of 2Gb for both Arch and ubuntu

So I burnt the Ubuntu 9.10 amd64 [64bit version] ISO in a DVD-RW and boot my pc from it. When the partition option comes be careful not to select anything other than the partition you want to select ubuntu on and the swap will auto-detected. Now after entering the details and everything the final overview of the installation process will appear. Click on “Advanced” tab below and deselect “install grub” option. That’s right make sure that Ubuntu doesn’t install it’s grub on your hard disk. It’s useless. I find Arch’s Grub2 much more customizable, easy to apply custom backgrounds and icons,etc. So let ubuntu install without letting it install grub anywhere. Now after all’s done reboot your computer and go to Arch. Modify the /boot/grub/grub.cfg

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GRUB 2 [howto]

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GRUB 2

GRUB 2 is derived from PUPA which was a research project to investigate the next generation of GRUB. GRUB 2 has been rewritten from scratch to clean up everything for modularity and portability. A mailing list and a wiki have been setup for discussing the development of GRUB 2.

GRUB 2 targets at the following goals:

  • Scripting support, such as conditionals, loops, variables and functions.
  • Graphical interface.
  • Dynamic loading of modules in order to extend itself at the run time rather than at the build time.
  • Portability for various architectures.
  • Internationalization. This includes support for non-ASCII character code, message catalogs like gettext, fonts, graphics console, and so on.
  • Real memory management, to make GNU GRUB more extensible.
  • Modular, hierarchical, object-oriented framework for file systems, files, devices, drives, terminals, commands, partition tables and OS loaders.
  • Cross-platform installation which allows for installing GRUB from a different architecture.
  • Rescue mode saves unbootable cases. Stage 1.5 was eliminated.
  • Fix design mistakes in GRUB Legacy, which could not be solved for backward-compatibility, such as the way of numbering partitions.

Multiboot Specification

Multiboot Specification is a protocol between a boot loader and an OS kernel. Because this specification is generic, you can use the protocol in your own boot loader and/or in your own OS freely. Follow this link, for more details.

Howto Install Grub2 in Debian and Ubuntu?

Here goes.

First remove your grub.

apt-get remove grub

apt-get install grub2 grub2-splashimages

The new GRUB2 splash images are installed at:

# ls /usr/share/images/grub/

Once you’ve rebooted, your default grub will load up and it has a new option called ‘Chainload into Grub 2′.When you are satisfied that GRUB2 works then you can select the second option, “upgrade-from-grub-legacy

You change the grub images from:

/usr/share/images/grub/

# nano /etc/grub.d/05_debian_theme

and change the following line from:

for i in {/boot/grub,/usr/share/images/desktop-base}/moreblue-orbit-grub.{png,tga}
to
for i in {/boot/grub,/usr/share/images/desktop-base,/usr/share/images/grub}/Plasma-lamp.{png,tga} and save the file.

Reboot and enjoy!

Howto add “Windows Entry” in GRUB2 ?

Edit the /boot/grub/grub.cfg file!

# nano /boot/grub/grub.cfg

Add this at the end of your /boot/grub/grub.cfg

# (2) Windows XP
menuentry "Windows XP" {
set root=(hd0,1)
chainloader +1
}

With Windows Vista, via EasyBCD and NeoGRUB

Since EasyBCD's NeoGRUB currently can't understand the GRUB v2 menu format, chain-load to it by replacing the contents of your "C:\NST\menu.lst" file with lines similar to the following:

default 0
timeout 1
title       Chainload into GRUB v2
root        (hd0,1)
kernel      /boot/grub/core.img

Grub2 has a new concept of root partition detection.

Unlike previous version of GRUB, if your XP is in hd1 or sda1

then put hda1 and sda1 and not hd0 /sd0