I 've changed the electronic board with positive result.
Now the hd is running and i'm copying important data to other hd, and after
it i will send the bad hd to vendor.

My hd is a western digital WD400, and in the bad board i don't see any fuse
or chip burned...my good luck is having another same model hd






"Rod Speed" escribió en el mensaje
...
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.

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.

Always i hd a bad hd it made a "klok noise when spin up"

Thats the drive recalibrating.

but make no noise.

Thats not usual if it doesnt spin up at all.

Today i going to try put another electronic board from other hd.


"Rod Speed" escribió en el mensaje
...
peyoting wrote:

is possible change the hd electronic board for other (same hd
model)?

Yes, but that doesnt always work.

i want recover data and after it i will buy a new hd

You can also use a recovery operation like www.retrodata.co.uk,
the price isnt as bad as the worst of them.


peyoting wrote

I've a hard drive that began to fail, sometimes bios recognised it
and SO began to boot, but next to it system reboots.

Now none computer find it. I'm think that hd don't spin, because
i dont listen noise.

any tool could access to hd without bios support ?

If it doesnt spin up, no software can access the data.

the hd is a western digital caviar 40gb ide.