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I know Grub, Grub2 and Burg are boot loaders. What is the differences between the three?

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GRUB

Tthe GRand Unified Bootloader is the software that is loaded by your computer after it turns on (after your computer's BIOS loading screens). GRUB then either automatically boots Ubuntu or gives you a list of installed Operating Systems and lets you choose one to boot (people not dual booting will probably not see the GRUB interface below).

GRUB Screenshot

GRUB 2

A complete rewrite of the original GRUB (legacy GRUB). On the surface the majority of users won't notice any difference but the new version has fairly major structural changes and should be more reliable. The new version stores its configuration files differently, which means most online tutorials involving GRUB had to be rewritten. Other new features include the ability to boot LiveCD ISOs from the hard drive; support for other architectures such as PowerPC; theming and other graphical capabilities and scripting support.

Since 9.10 Ubuntu has used GRUB 2 as the default boot loader for clean installs (prior to this it was GRUB).

BURG

As for BURG - the capitalisation seems to depend who you ask - it is a fork of GRUB.The main reason most users consider BURG is for the theming possibilities, replacing the two colour boot screen above, with (for example) the interface below.

A BURG theme

We are unlikely to see BURG in default Ubuntu installs (at least not any time soon). The bootloader could be called the most important component of the Ubuntu stack - if it goes wrong you can't get into Ubuntu (or your other operating systems)! So such a major component needs to be fairly mature and well tested to ensure no breakage across the huge variety of devices Ubuntu is used on.

And here's a quote from the BURG website:

burg is a brand-new boot loader based on GRUB. It uses a new object format which allows it to be built in a wider range of OS, including Linux/Windows/OSX/FreeBSD, etc. It also has a highly configurable menu system which works in both text and graphic mode. Additional features like stream support and multiple input/output device are also planned.

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Thankyou,also can you list out few advantages of having GRUB2 over GRUB ?? –  karthick87 Jan 1 '11 at 10:13
    
I would say .. none :) –  OpenNingia Jan 1 '11 at 10:40
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The big advantage is that grub2 is actually maintained. :) –  Jorge Castro Jan 1 '11 at 16:41
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Great answer! I am hearing about Burg for first time and it was in my wish list. It will be great if Ubuntu team clean it up and uses in Ubuntu. The dull black and white menu makes many to think Linux is still about command line black and white! –  Jamess Feb 4 '11 at 12:25
    
@Jamess the upcoming release of 11.04 has a purple and white command line menu ;) –  fluteflute Feb 4 '11 at 16:29
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