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Tom
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I thought you might like to see the following webpages:
http://forums.devshed.com/archive/t-197569
http://www.driverforum.com/harddrive3/1642.html
http://labmice.techtarget.com/articles/BIOS_hack.htm
Heres a link that explains what happen:
http://www.pwcrack.com/bios.shtml
And see also;
https://www.experts-exchange.com/questions/21078802/WD-1200-HDD-Locked.html
And finally (and I hope this one will help you - not all is lost)
http://labmice.techtarget.com/articles/BIOS_hack.htm
Hope that 'helped' in a way...
Cyber

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The best way to try is to get another circuit board and try to swap it. If it won't work (it worked on some old drives) then I would suggest to buy another drive unless information on your original drive is important.
If you don't have the same circuit board and you don't care about data on the drive then getting another drive is the best and cheapest solution.






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>>Swapping the harddrive pcb with another identical one from a unlocked drive will NOT clear or bypass the lock since the password(s) are stored in the "system maintenance cylinder" (at cylinder address 16,384). On this cilinder are other important data stored like: track-layout information, calibration information, identification, serial and so forth.<<
Has anyone tried using Hard Disk Editor to see if the "system maintenance cylinder 16,384" can be dumped to screen in HEX?
If so, then at least the ATA password can be seen.
The drive will not respond to any ATA commands at all. The only command it will respond is the one with password unlock, but you have to know the password.
So that's impossible to use Hard Disk Editor to see the password.
If still no joy, I would do a true LLF at register level. Again, using a software that can talk directly to the IDE controller and knows the vendor-specific IDE commands. That should re-initialize the whole thing and make the drive usable again without any password.

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Tom
And I like doing what other people say it cannot be done. I specialize in things that other people can't do. And I have such unique solutions in my own PC Shop.






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Tom

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* The russian 3000 system is NOT yet for sale since it is not finished translating.
* int13h commands will NOT work since you need the bios to recognise the drive. So ONLY direct access (bypassing bios) commands will work.
* A Masterpassword WILL erase the security settings (password) when the drive is locked in max security mode using the 'security erase prepare' directly followed by the 'security erase unit' command. However the masterpassword must be known since you cannot set the masterpassword when the drive is locked. It will however also DELETE all userdata.
* There are several manufacturars who set a master password at the factory. So if you can find/get it you can unlock your drive (wich might erase all userdata if securitymode was set to max). By looking at your master password revision code (shoud be 65534) you can determen if the drive still has the factory-set masterpassword (wich by the way is often 1 or more spaces believe it or not).
* Allthough the ATA-specs specify for the possibillity of a 32 bytes long password, most laptop-bioses will only accept 7 or 8 characters.... Â Most ata-lock software tools I know of also only accept 7-8 chars..... (brute forcing still might be a option)
- No old ATARI or Macintosh will 'simply' give access to the drive: I tested it. (Ruelnov what are you using???)
- NONE of my hdd's could be 'hacked' by swapping pcb's of identical one's: I tried.
- Using a magnet to fully erase the disk renders the disk useless, since it also whipes all other IMPORTANT data in the system maintenence cilinder. It DID however whipe the password. But to use the drive again you need vendor-specific tools &Â commands.
In this Ruelnov has a point: Some drives are possible to unlock by reinitialising (through vendorspecific commands) or by upgrading the microcode.
Some drives however seem to have their passwordroutine embedded in a chip on their hdd pcb; no microcode will help here (at least not by bypassing the pw-check in the microcode before flasing the hdd.)
But in the end, almost all types and brands of hdd's can have their password READ OUT by specialized hardware.
Old IBM DxxA series drives have a security bug in the firmware, so it is possible to read the password from almost any IBM-DxxA drive.






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You might also send the hard drive in to IBM for a warranty repair. Generally they just send you a refurbished drive as a replacement.
However, filling the claim with eBay/PayPal/seller is a good idea.

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To IBM it wil just be 'another drive with damaged system maintenance cylinder'...






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I never tried the magnet; however I DID use my bulk eraser (a studio quality AC degausser) and I can guarantee you that this will work!!!! However the disk will not function anymore (of course) but the hdp was gone...
This was on a 20 GB Hitachi-disk, but I forgot the typenumber over time (did'nt seem relevant at that point).
ps: my degausser has an output of 4000 gauss. So tapedeck-head degaussers will not be powerfull enoug I guess. But then again, how much gauss power (or magnetism power) would one need to reach the first or last platter of a hdd?
Frendly greetings, (and enjoying the after-chat ;-))
AlfaLAN

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The head of hard drive is very close to the surface and makes a very strong field at very very small surface in order to change information here only and not neightboor's sectors or sectors on another side of plate.
Additionally, the heads are very very very close to the surface and if you will put your magnet at least one inch away then your magnetic field will be very weak by then.
Btw, each hard drive has few magnets inside next to the disks, but it does not damage data.
Honestly, I don't really know what is the minimum power is needed for damaging modern hdd, but not many people has studio degausser at home for sure and I still don't think that it will be enough :-)
P.S.: If you are really interested then you can dig up some additional info on google.
http://www.dansdata.com/magnets.htm
http://littleshop.physics.colostate.edu/MagDisk.html
and more.
Nice links, were very informative, Thanks!
Did some googeling on degaussers, found that mine (4000 gauss) is just strong enough.
Various links support my test: erasing hdd with degaussers. (was impressed by the prices though, Didn't know that when I bought it secondhand for 10 euro ;-) )
http://www.videotapeeraser.com/bulk-eraser.html
http://www.care4data.ch/artikel/index.php?gruppe=47Â (festplatte means harddisk ;-)) (I'm from holland by the way)
Greetz,
AlfaLAN
The password is stored a non-data portion of the disk where all the drive parameter information is stored.
The BIOS in whatever laptop it was in when passworded put it there.
NOW, if that's enabled, when the drive first starts up it asks the system for the password.
The system asks the user to enter it.
If the drive doesn't get it then it won't accept any following commands.
..........
The function has basically always been there but aside from random users it's only ever been used by Microsoft in the Xbox.
Here's a good description of how it works in the Xbox....
Just replace all references to "the Xbox's EEPROM" ~to~ "the PC's BIOS" as you read it and THEN maybe you'll understand the origional question..
http://www.xbox-linux.org/docs/hdpassword.html
Here's a page with some utilities that amy or may not be usefull.
http://www.xbox-scene.com/tools/tools.php?page=harddrive
The Xbox used 8Gb WD or 10Gb Seagates
Other Xbox sites might have some other utilities..






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I'll try putting it on my nomad jukebox (lol).... if i'm lucky, the firmware will just access the disk and will be able to format it ( I mean, IF the pwd is stored in some physical place)
In the worst case scenario, I'll have a 6 gb nomad jukebox out of a 40 gb thanks to the fact the pwd sector is at the end and not recognizable sector.....
AlfurX
Format can clear only accessible disk surface.
It is possible to disable the pasword from your laptop BIOS. Read the laptop manual, how to do it.
Thanks
Tom

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http://www.hdd-tools.com/products/rrs/
I was skeptical, but it did in fact work- Â For 50 bucks to recover priceless Data seemed worth it to the Customer- Â and we made good on labor- so it worked out quite well for everyone-
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Computer data storage, often called storage or memory, is a technology consisting of computer components and recording media used to retain digital data. In addition to local storage devices like CD and DVD readers, hard drives and flash drives, solid state drives can hold enormous amounts of data in a very small device. Cloud services and other new forms of remote storage also add to the capacity of devices and their ability to access more data without building additional data storage into a device.