hard drive problem

Valeri Galtsev galtsev at kicp.uchicago.edu
Wed Jun 24 18:12:03 UTC 2015

On Wed, June 24, 2015 1:00 pm, jd1008 wrote:
> On 06/24/2015 09:41 AM, Valeri Galtsev wrote:
>> On Wed, June 24, 2015 10:36 am, kpneal at pobox.com wrote:
>>> On Wed, Jun 24, 2015 at 08:57:20AM -0500, Brandon J. Wandersee wrote:
>>>> jd1008 writes:
>>>>> does anyone have a way to unlock the master pword in
>>>>> a recent WD 2TB  2.5" drive?
>>>> "Master pword?" Is this a firmware-level encrypted drive? If so, no. A
>>>> "reset" feature would defeat the purpose of having encryption in the
>>>> first place. If the drive is self-encrypting you don't know the
>>>> password, the drive's a brick.
>>> My guess is that you can tell the drive to use a new password, but the
>>> contents of the drive are lost. That's assuming a firmware-level
>>> encryption.
>>> BTW, are there really 2TB _2.5"_ drives on the market?
>> It may be an enclosure with two 1TB 2.5" drives either concatenated, or
>> RAID0 thus presenting itself as 2 TB. Just a wild guess.
>> Valeri
> This one is actually a 4 platter drive, thus rather thick (15mm).
> Goodby to 7.5mm 2.5" drives. Areal density has not reached the
> quantum level yet :)

Cool note! With magnetic domains in will not be quantum level though: it
will be at least about a hundred of individual atoms involved into each
individual magnetic domain. Bu I really like your comment!

Oh, boy, I seemed to overestimate macroscopicity of physics here (IBM
managed it on 12 atoms...):


> But from the technologists I know who are
> and have worked at HD companies, I hear that mechanical drives
> are totally on the way out as the the RAM and FLASH electronics
> get every tinier and faster, and much more reliable and long lasting.

Holography, one might think, could be most dense way of packing
information (of what we know today).

Thanks for your brilliant comment! It made my day!


Valeri Galtsev
Sr System Administrator
Department of Astronomy and Astrophysics
Kavli Institute for Cosmological Physics
University of Chicago
Phone: 773-702-4247

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