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 Post subject: WD5000AAJB Controller needed
PostPosted: October 25th, 2010, 10:59 
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Joined: October 25th, 2010, 10:38
Posts: 4
Location: Colorado, USA
All,
My backup hard-drive that I have been using seems to have controller problems. I am looking for an IDE controller board to see if I can pull some data off of it and put onto my NEW Element backup HD. I am fairly sure it is the controller, as I can hear the head move, and I have tried 3 different USB to IDE interfaces, and they all three act the same.


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 Post subject: Re: WD5000AAJB Controller needed
PostPosted: October 25th, 2010, 11:18 
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Joined: August 12th, 2008, 13:11
Posts: 3235
Location: USA
That's probably not the problem, and even if it is you would not be able to just use a new board.

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You don't have to backup all of your files, just the ones you want to keep.


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 Post subject: Re: WD5000AAJB Controller needed
PostPosted: October 25th, 2010, 11:25 
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Joined: October 25th, 2010, 10:38
Posts: 4
Location: Colorado, USA
Why don't you think that isn't the problem? The drive works (acts) the same way for now 4 different interfaces, so it is narrowed down to either the drive itself or the controller, so it seems the next logical thing to do is try to swap out controllers.

Why wouldn't the same controller work for the same drive?

Keith


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 Post subject: Re: WD5000AAJB Controller needed
PostPosted: October 25th, 2010, 11:37 
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Joined: November 9th, 2006, 15:15
Posts: 2984
The unit powers and head seeks - very unlikely that PCB is bad

It is likely that the spindle motor stops after several seek attempts

Changing PCB will not work because a) is likely not the problem, and b) PCB contains unique information required for disk initilisation


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 Post subject: Re: WD5000AAJB Controller needed
PostPosted: October 25th, 2010, 12:39 
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Joined: August 12th, 2008, 13:11
Posts: 3235
Location: USA
ch701builder wrote:
Why don't you think that isn't the problem? The drive works (acts) the same way for now 4 different interfaces, so it is narrowed down to either the drive itself or the controller, so it seems the next logical thing to do is try to swap out controllers.

Why wouldn't the same controller work for the same drive?

Keith

Read some other threads around here with similar issues.

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You don't have to backup all of your files, just the ones you want to keep.


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 Post subject: Re: WD5000AAJB Controller needed
PostPosted: October 25th, 2010, 13:10 
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Joined: October 25th, 2010, 10:38
Posts: 4
Location: Colorado, USA
OK, I guess I am still confused.
Then what is the problem? Does the PCB contain information that is specific to my HD? It seems like the controller would contain information that is specific to the drive model, not to my personal specific drive.

Your right about the spindle spinning and the head moving.


Any other ideas? I have one file that I am interested in recovering, but... it isn't worth the $500 - $10,000 data recovery sights are wanting.

Keith


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 Post subject: Re: WD5000AAJB Controller needed
PostPosted: October 25th, 2010, 13:12 
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Joined: August 12th, 2008, 13:11
Posts: 3235
Location: USA
ch701builder wrote:
Does the PCB contain information that is specific to my HD?

Yes

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You don't have to backup all of your files, just the ones you want to keep.


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 Post subject: Re: WD5000AAJB Controller needed
PostPosted: October 25th, 2010, 13:45 
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Joined: October 25th, 2010, 10:38
Posts: 4
Location: Colorado, USA
Interesting!! So there's memory onboard that holds information about bad sectors, items to this physical drive, etc.....

If that's the case then, "Dang-It", I'm stuck!!!

Keith


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 Post subject: Re: WD5000AAJB Controller needed
PostPosted: October 25th, 2010, 13:47 
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Joined: August 12th, 2008, 13:11
Posts: 3235
Location: USA
ch701builder wrote:
So there's memory onboard that holds information about bad sectors

No

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You don't have to backup all of your files, just the ones you want to keep.


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 Post subject: Re: WD5000AAJB Controller needed
PostPosted: October 25th, 2010, 23:09 
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Joined: September 8th, 2009, 18:21
Posts: 16963
Location: Australia
ch701builder wrote:
Interesting!! So there's memory onboard that holds information about bad sectors, items to this physical drive, etc.....

The following article should go some way towards explaining why modern drives have adaptive information:

HDD from inside: Tracks and Zones. How hard it can be?
http://hddscan.com/doc/HDD_Tracks_and_Zones.html

BTW, information regarding bad sectors is stored on the platters.

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