Mailinglist Archive: opensuse (2224 mails)

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Re: [opensuse] LILO/Grub Problem Solved Clarification
  • From: Bob S <usr@xxxxxxxxxxx>
  • Date: Sat, 10 Feb 2007 23:17:31 -0500
  • Message-id: <200702102317.31586.usr@xxxxxxxxxxx>
On Friday 09 February 2007 23:56, M Harris wrote:
> On Friday 09 February 2007 22:13, Bob S wrote:
> > One of the reasons I did not use Grub in the
> > past was that I didn't understand how it worked.
>
> That is usually the main reason most new things are left untried...
> the positive way to put it is that most of us use what we know and are
> comfortable with...
>
> > When using Lilo it edited the MBR, correct?  What is happening now
> > when using Grub? What is in the MBR now? It doesn't change? Does the
> > MBR now refer the boot process to Menu.1st?
>
> Phase #1 resides in the MBR, and contains just enough to load phase
> #2.
>
> The cool thing is that grub knows how to read the file system(s)
> before the system is booted... so it can find all of phase #2 on the
> drive under /boot. The menu is built on-the-fly from the
> /boot/grub/menu.lst file (located on the filesystem) and not written
> to the MBR. (lilo configuration is contained on the mbr... so
> lilo.conf is used when the mbr is written) Because the config for grub
> is *not* written to the mbr it can be changed dynamically on bootup
> (from the grub command menu). Also, changes to the menu configuration
> (menu.lst) are read at bootup from /boot/grub/menu.lst so the mbr does
> not have to be written when changes are made to the menu.lst file.
>
That answers my question. Thanks

Bob S.
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