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Re: [Bulk] Re: [Bulk] Re: [OCLUG-Tech] Harddisk location on a virgin machine ??

  • Subject: Re: [Bulk] Re: [Bulk] Re: [OCLUG-Tech] Harddisk location on a virgin machine ??
  • From: William Case <billlinux [ at ] rogers [ dot ] com>
  • Date: Fri, 26 Oct 2007 12:22:17 -0400
Thanks you Stephen and Bart;

The responses you have provided clarify some of the issues.

On Fri, 2007-10-26 at 07:37 -0400, Stephen Gregory wrote:
> On Thu, Oct 25, 2007 at 11:40:50PM -0400, William Case wrote:
> > Rhetorical question; how?  Real question.  Should there be a data sheet
> > or some documentation that tells me how the firmware for my machine's
> > BIOS works?  Or, is my search fruitless because that info is
> > proprietary?
> It is unlikely you will find the full documentation for your
> motherboard. However you will likely find the documentation for every
> chip on the motherboard. You can get the cpu and chipset documentation
> for AMD and Intel. Last I checked it was free of charge to get the
> PDFs. I suspect Nvidia publishes their chipset documentation as well
> but I have not looked for it. In those documents you will find
> intrecate detail of what has to happen to initilize those chips.
> While you could grab Intel's System Integrators manual (vol 1 through
> n) I would recommend against it. You will be instantly
> overwelmed. Today's computers are complicated beasts. Instead go grab
> some old computer architechture books from the library. A booked that
> covered the 8088/8086 would be a bonus but just about any cpu
> architechture will be fine.

I have downloaded PDFs for Intel (I used to have an Intel motherboard
and CPU) and AMD (My new chip -- all 649 pages).  I will see what I can
get for ASUS motherboards and NVIDIA.  Besides the general knowledge of
how booting takes place at the non-abstract level; I am trying to find
out how drives and partitions get named/located before the OS is loaded.

fdisk calls the harddisk and partition "major" and "minor"; Grub uses
hd0,0 or whatever.  (Not yet sure they are the same thing.) This gets
translated by Linux when it is finally booted into /dev/sda1 or
whatever.  I am trying to figure out at the hardware level, what is the
first name/location of a disk as known to BIOS and how does that
translated into major and minor; hd0,0; and then /dev/sda1?  I have the
code for Grub that shows the final step; hd0,0 ==> sda1.

Ignore the above blathering; just writing a response to re-clarify in my
own mind what I am looking for.

Don't think I am nuts.  I'll get there.

Regards Bill