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Posted to users@spamassassin.apache.org by Agnello George <ag...@gmail.com> on 2008/03/14 14:53:53 UTC
linux boot process query
Hi
I was just Reading the article from
http://www.comptechdoc.org/os/linux/howlinuxworks/linux_hlbootproc.html
in the article
before the system can boot the BIOS detect the first available IDE device,
on this device is the MBR which contain the boot loader and partition
tables
now suppose i have Two OS install -- debian Etch and the centos ...and grub
is the default boot loader ( and grub file is located in /etc/grub.conf
..which has instruction / menu screen for booting the various OS )
but i don't seem to understand one thing - How is /etc/grub.conf made
available to the boot loader even before a OS is selected ( explanation
not very clear in the article )
--
Regards
Agnello Dsouza
www.linux-vashi.blogspot.com
Re: linux boot process query
Posted by Matt Kettler <mk...@verizon.net>.
Agnello George wrote:
> Hi
> I was just Reading the article from
> http://www.comptechdoc.org/os/linux/howlinuxworks/linux_hlbootproc.html
> in the article
> before the system can boot the BIOS detect the first available IDE
> device, on this device is the MBR which contain the boot loader and
> partition tables
>
> now suppose i have Two OS install -- debian Etch and the centos ...and
> grub is the default boot loader ( and grub file is located in
> /etc/grub.conf ..which has instruction / menu screen for booting the
> various OS )
> but i don't seem to understand one thing - How is /etc/grub.conf made
> available to the boot loader even before a OS is selected (
> explanation not very clear in the article )
Agreed. Wrong list.
However: You might want to read a more up-to-date doc on the boot
process that covers grub:
http://www.ibm.com/developerworks/library/l-linuxboot/index.html
But the short answer is that grub stage2 is actually file system aware,
and can actually read the file system.
Re: linux boot process query
Posted by Yet Another Ninja <sa...@alexb.ch>.
On 3/14/2008 3:06 PM, Yet Another Ninja wrote:
> On 3/14/2008 2:53 PM, Agnello George wrote:
>> Hi
>> I was just Reading the article from
>> http://www.comptechdoc.org/os/linux/howlinuxworks/linux_hlbootproc.html
>> in the article
>> before the system can boot the BIOS detect the first available IDE
>> device,
>> on this device is the MBR which contain the boot loader and partition
>> tables
>>
>> now suppose i have Two OS install -- debian Etch and the centos ...and
>> grub
>> is the default boot loader ( and grub file is located in /etc/grub.conf
>> ..which has instruction / menu screen for booting the various OS )
>> but i don't seem to understand one thing - How is /etc/grub.conf made
>> available to the boot loader even before a OS is selected ( explanation
>> not very clear in the article )
>>
>
> body __AGNELLO /^Agnello Dsouza$/
> body __GRUB /grub/i
> score WRONG_LIST (__AGNELLO && __GRUB)
> score WRONG_LIST 5.0
>
>
damm - didn't lint
body __AGNELLO /^Agnello Dsouza$/
body __GRUB /grub/i
meta WRONG_LIST (__AGNELLO && __GRUB)
score WRONG_LIST 5.0
Re: linux boot process query
Posted by Yet Another Ninja <sa...@alexb.ch>.
On 3/14/2008 2:53 PM, Agnello George wrote:
> Hi
> I was just Reading the article from
> http://www.comptechdoc.org/os/linux/howlinuxworks/linux_hlbootproc.html
> in the article
> before the system can boot the BIOS detect the first available IDE device,
> on this device is the MBR which contain the boot loader and partition
> tables
>
> now suppose i have Two OS install -- debian Etch and the centos ...and grub
> is the default boot loader ( and grub file is located in /etc/grub.conf
> ..which has instruction / menu screen for booting the various OS )
> but i don't seem to understand one thing - How is /etc/grub.conf made
> available to the boot loader even before a OS is selected ( explanation
> not very clear in the article )
>
body __AGNELLO /^Agnello Dsouza$/
body __GRUB /grub/i
score WRONG_LIST (__AGNELLO && __GRUB)
score WRONG_LIST 5.0