"Rod Speed" <rod.speed.aaa@gmail.com> wrote in message
news:4jtf9bF9j474U1@individual.net...
> peyoting <peyoting@quitar.terra.es> wrote:
>
>> I have some question about the hd electronic part:
>
>> the bios communicate with hd trough mainboard ide controller,
>
> Yes.
>
>> its possible send commands to ide controller
>
> Not unless you write the code to do that.
>
>> or view the process of detection of hd?
>
> Npe.

Yes,
Seagate, Toshiba - easily, with built in TMOS, other brands - more complex

>> are there cmos or flash or other rewritable chip?
>
> Yes, there drive is usually flashable, or at
> least has the firmware on the the platters.

There are serial, parallel flashes, firmware is on the platters, HDD`s
microprocessor and inside flash

>> Always i hd a bad hd it made a "klok noise when spin up"
>
> Thats the drive recalibrating.
>
>> but make no noise.

??????

HDD recalibrates when powered on, later it constantly recalibrates according
to working temperature

> Thats not usual if it doesnt spin up at all.
>
>> Today i going to try put another electronic board from other hd.

good,
let us know when you have any news.

--
Alan Kakareka
Data Recovery Service
786-253-8286 cell
http://www.247recovery.com
--