"Rod Speed" wrote in message
...
peyoting 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
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