Disposing of a hard drive.

On 18-6-2018 1:40, Ron C wrote:
On 6/16/2018 8:05 PM, Rene Lamontagne wrote:
On 06/16/2018 6:45 PM, Bill Ward wrote:
On 17/06/2018 00:31, Wolf K wrote:
On 2018-06-16 19:28, Bill Ward wrote:
On 16/06/2018 05:42, NotMe wrote:
[...]
All the screws are not visible, some are hidden under labels and
stickers. Takes about ten minutes to completely dissemble, worth it
for the magnets.
The magnets must be buried so deep as not to attract anything.

Bill.

Shielded by the steel case.

Right.
Bill.

The 2 magnets, 1 on each side of the voice coil are glued to the 2
mounting brackets which are made of Mu-Metal which is a magnetic
shielding material.

Rene

All this talk of hard drive disassembly and salvaging strong magnets
talk motivated me to take an old drive apart. No problem at all pulling
the cover, but somehow I can't seem to find these magnets or even that
voice coil thingy.
Maybe someone can point it out on my drive?

Here's a cover off top view:
https://www.dropbox.com/s/8lhnybzho0sgh5m/Z_4665.jpg

Else maybe it's somewhere underneath:
https://www.dropbox.com/s/p6ogcj5h9tlhjpp/Z_4649.jpg

Thats a very old one, no magnets, but a stepper motor to
drive the head movement.
30-40 years old........

On 6/17/2018 10:04 PM, Paul wrote:
Rene Lamontagne wrote:
On 06/17/2018 8:06 PM, Ron C wrote:
On 6/17/2018 7:56 PM, Rene Lamontagne wrote:
On 06/17/2018 6:40 PM, Ron C wrote:
On 6/16/2018 8:05 PM, Rene Lamontagne wrote:
On 06/16/2018 6:45 PM, Bill Ward wrote:
On 17/06/2018 00:31, Wolf K wrote:
On 2018-06-16 19:28, Bill Ward wrote:
On 16/06/2018 05:42, NotMe wrote:
[...]
All the screws are not visible, some are hidden under labels
and stickers. Takes about ten minutes to completely dissemble,
worth it for the magnets.
The magnets must be buried so deep as not to attract anything.

Bill.

Shielded by the steel case.

Right.
Bill.

The 2 magnets, 1 on each side of the voice coil are glued to the 2
mounting brackets which are made of Mu-Metal which is a magnetic
shielding material.

Rene

All this talk of hard drive disassembly and salvaging strong magnets
talk motivated me to take an old drive apart. No problem at all
pulling
the cover, but somehow I can't seem to find these magnets or even that
voice coil thingy.
Maybe someone can point it out on my drive?

Here's a cover off top view:
https://www.dropbox.com/s/8lhnybzho0sgh5m/Z_4665.jpg

Else maybe it's somewhere underneath:
https://www.dropbox.com/s/p6ogcj5h9tlhjpp/Z_4649.jpg


Sorry Ron, I just don't recognize that drive at all, Maybe you could
give us a make and model.

Rene

Fujitsu Limited* Model M2235AS* [21 Mbytes] (circa 1987)
It was the hard drive on my first PC.** G
~~
Sorry, I was just kidding around posting that.
Clearly no super magnet/voice coil technology in that drive..

Well it kept me guessing, :-)* I kinda figured it was a vintage drive
but back then I never opened up many drives so wouldn't recognize it
anyway.

Rene


On page2 here, it looks like a rotating motor somehow
moves the arm. The mechanism isn't clear.

https://ia800605.us.archive.org/25/i...chure_1985.pdf


** Paul

Ah well, if you're really interested in archeology I could take more
photos of the drive. :-)
--
==
Later...
Ron C
--

Ron C wrote:


Ah well, if you're really interested in archeology I could take more
photos of the drive. :-)

Since you have it open, rotate the motor and see if anything moves.

Paul

On 6/17/2018 11:31 PM, Paul wrote:
Ron C wrote:


Ah well, if you're really interested in archeology I could take more
photos of the drive.* :-)

Since you have it open, rotate the motor and see if anything moves.

** Paul

It's late, and I put the cover back on after I snapped the photos.
Anyway, I already know what moves .. being as I was (as they say)
up close and personal with it.
--
==
Later...
Ron C
--

On 6/17/2018 8:01 PM, Ron C wrote:
On 6/17/2018 10:04 PM, Paul wrote:
Rene Lamontagne wrote:
On 06/17/2018 8:06 PM, Ron C wrote:
On 6/17/2018 7:56 PM, Rene Lamontagne wrote:
On 06/17/2018 6:40 PM, Ron C wrote:
On 6/16/2018 8:05 PM, Rene Lamontagne wrote:
On 06/16/2018 6:45 PM, Bill Ward wrote:
On 17/06/2018 00:31, Wolf K wrote:
On 2018-06-16 19:28, Bill Ward wrote:
On 16/06/2018 05:42, NotMe wrote:
[...]
All the screws are not visible, some are hidden under labels
and stickers. Takes about ten minutes to completely
dissemble, worth it for the magnets.
The magnets must be buried so deep as not to attract anything.

Bill.

Shielded by the steel case.

Right.
Bill.

The 2 magnets, 1 on each side of the voice coil are glued to the
2 mounting brackets which are made of Mu-Metal which is a
magnetic shielding material.

Rene

All this talk of hard drive disassembly and salvaging strong magnets
talk motivated me to take an old drive apart. No problem at all
pulling
the cover, but somehow I can't seem to find these magnets or even
that
voice coil thingy.
Maybe someone can point it out on my drive?

Here's a cover off top view:
https://www.dropbox.com/s/8lhnybzho0sgh5m/Z_4665.jpg

Else maybe it's somewhere underneath:
https://www.dropbox.com/s/p6ogcj5h9tlhjpp/Z_4649.jpg


Sorry Ron, I just don't recognize that drive at all, Maybe you
could give us a make and model.

Rene

Fujitsu Limited Model M2235AS [21 Mbytes] (circa 1987)
It was the hard drive on my first PC. G
~~
Sorry, I was just kidding around posting that.
Clearly no super magnet/voice coil technology in that drive..

Well it kept me guessing, :-) I kinda figured it was a vintage drive
but back then I never opened up many drives so wouldn't recognize it
anyway.

Rene


On page2 here, it looks like a rotating motor somehow
moves the arm. The mechanism isn't clear.

https://ia800605.us.archive.org/25/i...chure_1985.pdf


Paul

Ah well, if you're really interested in archeology I could take more
photos of the drive. :-)

The black thing sticking up between the Y shape is a stepper motor pully.
There's a steel band wrapped around it and connected to each side of the Y.
When the motor rotates, the lever moves.
The steel band has three leaves. Two outer ones go to one side of the Y.
The third in the middle goes to the other side. That way, you can
get from one end to the other without having the band overlap anywhere.

Won't be the usual big magnets in that drive.

In alt.comp.os.windows-10, on Sat, 16 Jun 2018 00:17:47 +0100, Bill Ward
wrote:

On 15/06/2018 22:40, T wrote:
On 06/15/2018 09:53 AM, Jonathan N. Little wrote:
Bill Ward wrote:
Most hard drives seem quite indestructible. What is the best method
of disposal ? I do live on the coast with some 500ft high cliffs nearby.
Bill.

Hammer works.

1+

These things are so precise that any warping of the media
will render them useless.

Give it a couple of good whacks.* Wear safety glasses.


CD's and DVD's I just put in the micro wave for a few seconds.
The financial director where I used to work had a novel way of
destroying a floppy disk. He brought a crumpled one to me and asked if I
could do anything with it. He had left it on the window sill in full
sunlight and gone on holiday.
Bill.

I have a 45 RPM record that got hot that way. It goes in waves over an
inch high as it spins. That's because it's a rock and roll record.

(The record player requires a 2 inch needle to play it.)

On 6/15/2018 11:47 AM, Bill Ward wrote:
Most hard drives seem quite indestructible. What is the best method of
disposal ? I do live on the coast with some 500ft high cliffs nearby.
Bill.

I hammer a screwdriver into the vent hole.

Lynn

On 6/15/2018 11:47 AM, Bill Ward wrote:
Most hard drives seem quite indestructible. What is the best method of
disposal ? I do live on the coast with some 500ft high cliffs nearby.
Bill.

I hammer a screwdriver into the vent hole. Any contact with a platter
destroys the drive.

Lynn

On Fri, 15 Jun 2018 17:47:31 +0100, Bill Ward wrote:

Most hard drives seem quite indestructible. What is the best method of
disposal ? I do live on the coast with some 500ft high cliffs nearby.
Bill.


I use a hammer and a few nails.. good sized nail that I drive right
through the drive...
This is if I have a bunch to do.. like a lease that's about to expire
etc...

Screws work too..

"Lynn McGuire" wrote in message
news
On 6/15/2018 11:47 AM, Bill Ward wrote:
Most hard drives seem quite indestructible. What is the best method of
disposal ? I do live on the coast with some 500ft high cliffs nearby.
Bill.

I hammer a screwdriver into the vent hole.

For ultimate satisfaction, place the drive on a baulk of wood and hammer a
fat 6" nail through the casing somewhere off-centre of the circular hub
which is usually visible even on the outside of the case. You can apply
maximum brute force and imagine you are driving the nail into a sensitive
part of the anatomy of your worst enemy :-)

The MOD in the UK used insist (*) that disk-disposal contractors shave the
oxide off each of the platters, and then, for maximum paranoia, the oxide
must to be returned to the MOD, which suggests a fear of an unscrupulous
person gluing each bit of oxide back into the correct place on the disk. :-)

(*) So I've been told.