Bootloader

[David Bain]

On Fri, 2005-09-30 at 10:21 -0400, Phillip Susi wrote:
> I still don't know what's so great about grub.  I noticed it was the 
> default in ubuntu so I spent probably 10 mins trying to figure out how 
> to use it when I was installing my system, gave up, and just used lilo 
> instead.
> 
> What are the technical reasons that grub is better than lilo?
> 
> Anders Karlsson wrote:
> > Hi,
> > 
> > I just read a posting on LKML about SATA disk detection order
> > and bootloaders. There is a bootloader named "Gujin" - website
> > is at http://gujin.org.
> > 
> > Have a look, read a bit about it and ponder whether Grub is the
> > best choice for a bootloader. Ubuntu is about ease of use, and
> > from what I can see, Gujin is it.
> > 
> > Let me know what you think.
> > 
> 
> 
1. If you mess up grub, you can still boot in and save the system
2. You need to reinstall lilo every time you make changes by reparsing
the file and rewritign the MBR (which relates to number 1). This is not
necessary with Grub
3. Grub can use drive mapping An example of the use of drive mapping is
fooling a windows MBR that it is on the first partition

e.g. entry: 
   title = Windoze
         map (hd0) (hd1)   
         map (hd1) (hd0)
         rootnoverify (hd1,0)
         savedefault
         makeactive
         chainloader
4. Grub has much clearer error messages
5. Grub's file format is more defined and structured

Grub is generally more flexible once you get used to hd0,0 type naming
convention, which is a bit different from the way that Linux names
devices.
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