B00ze wrote:
Good day.
Got a 15 years old WD IDE hard drive, that was showing ZERO problems in
SMART data, suddenly can no longer calibrate (i.e. it can't read
anymore.) NOW the SMART data is showing something's wrong. Hard drive
"clicks" (heads go back and forth full disk) then quits trying. Have
another of the same model, but hesitant moving the platters myself;
apparently platters are not really "stuck" together and I could
mis-align them (rotate them in relation to each other) rendering the
whole thing un-readable. Was planning to move the data off but kept
delaying since it showed no sign of problems...
Now need a data recovery company; anyone have good experience with one
and can recommend?
I'm also curious about how they recover drives if not by using another
of the same model (where they hell how they going to find one as old as
mine, and can they really keep one of each model of ALL drives?) If you
can enlighten me on that too, would be great.
Thank you.
Best Regards,
The big-name companies are listed here.
https://support.wdc.com/warranty/dat...ericas&lang=en
*******
And you can find sites with chit-chat about recovery.
https://www.data-medics.com/forum/wd...re58-t746.html
And there is gear people hint at, but don't describe in detail.
I even found a site in India, selling things like "head stack
holders" for when you change out a head stack. If you want to
get into the business, there's always someone selling the
bits and pieces needed.
http://www.acelaboratory.com/pc3000.udma.php
One interesting tidbit, is there is a three wire TTL level
serial port on the controller board. Which accepts a cryptic
language of some sort (parameter list, comma separated), There
is at least one web page, which describes temporarily
interrupting some electrical connections on a drive,
issuing a couple commands into that serial port, and actually
recovering a drive where the firmware has damaged a data
structure stored in the Service Area. That was the first hint
I got, that a hard drive has an interface like some home
routers do. And it's not a port that responds to "help" either :-)
*******
An industry practice seems to be "no charge unless I
recover your data". You'd probably have to pay for shipping
in cases where you want the carcass back, if they fail
at the task.
I've never used data recovery myself, so have not gone through
the selection process of picking a repair/recovery facility. My
phone book has three entries, claiming to be local service, but
my guess is they just mail your drive to a larger facility somewhere.
The listing for Florida, had maybe 30-40 providers. That's a lot
of basements, with glove boxes in them...
They should really be using a Class 100 or Class 10 Clean Room or
Air Curtain for this work. But there are also glove boxes with
HEPA air supplies, for doing the work. I think you could only get
away with sloppy cleanliness, on the old drives (the ones with
10u flying height).
And I think it'll be interesting, when someone asks this question,
and he has a Helium drive. Who can handle one of those ? That
will take a rocket scientist, as the HDA has a seal to keep the
Helium in. What a mess that's going to be. Do they use a can
opener on those ? :-) Conventional air-filled drives with breather
holes, are a lot easier to open up (the breather hole has a HEPA
filter underneath the cover). There is no "vacuum" inside
a hard drive, as the heads actually "fly" on a cushion of
some gas, whether it's 1 ATM air, or it's helium.
Paul