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 Post subject: WD10EACS-00ZJB0 - no apparent fault but no access to LBA
PostPosted: August 10th, 2010, 13:19 
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Joined: February 18th, 2009, 8:08
Posts: 306
Location: Manchester, UK
Hello all,

Just received a drive in which I had told had been dropped. Obviously I expect to find a head fault. However, I am not sure if this is the issue. It is possible to read the full firmware on both heads 0 & 1. Tests on all of the 6 other heads come back as good. All the the firmware modules seem to be OK. However no LBA values are readable.

I've checked to see if there are issues with the g-list, translator, & recreated the rom from the firmware modules (original rom looked good anyway)

WD10EACS-00ZJB0
28 Feb 2008
WCASJ

The drive is labeled up a WD Green. All of the firmware modules showing it is a ROYL drive the PCB on this disk is on this disk is more one I would associate with the WD Black II Sata III (Rectangular) not the typical diagonal cut out that started to be seen from the WD5000AAKS series onwards. However, it just looks like an early revision of the series as the U12 is definitely integrated.

Any thoughts?
Best wishes,
John


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 Post subject: Re: WD10EACS-00ZJB0 - no apparent fault but no access to LBA
PostPosted: August 10th, 2010, 13:21 
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Joined: August 12th, 2008, 13:11
Posts: 3235
Location: USA
That's not unusual for heads failure on these

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 Post subject: Re: WD10EACS-00ZJB0 - no apparent fault but no access to LBA
PostPosted: August 10th, 2010, 13:38 
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Joined: February 18th, 2009, 8:08
Posts: 306
Location: Manchester, UK
That's unfortunate, I was rather hoping it wasn't, it being a 4 platter WD, I can't imagine parts will come easily for this one.
Any other ways to test the drive before a replacement is considered?

Best wishes,
John

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 Post subject: Re: WD10EACS-00ZJB0 - no apparent fault but no access to LBA
PostPosted: August 10th, 2010, 15:30 
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Joined: May 5th, 2004, 20:06
Posts: 2782
Location: England
have you imaged heads 0 and 1 ? If not I would start there before you tinker Dr.

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 Post subject: Re: WD10EACS-00ZJB0 - no apparent fault but no access to LBA
PostPosted: August 11th, 2010, 5:57 
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Joined: November 9th, 2006, 15:15
Posts: 2984
I still say head(s) are bad, dont be so quick to rule this out. The head tests you made are not 100%.

Also, SA is usually written at lower densities so some cases you will find SA can be read when data cant...


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 Post subject: Re: WD10EACS-00ZJB0 - no apparent fault but no access to LBA
PostPosted: August 11th, 2010, 6:48 
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Joined: February 18th, 2009, 8:08
Posts: 306
Location: Manchester, UK
I just found the following post:

wd10eacs-all-modules-but-won-read-lba-t13608.html

I really should have checked thoroughly before starting a new post, sorry. Looks like it's not so unusual for this series of disk.
Definitely looks like the heads (especially knowing it has taken physical shock). Depopulating the head map isn't doing me any favours in getting access to the good 'uns. I see user 'skyline' requires a matching ROM relating to this drive, and it looks as if I might require some working heads. I wonder if he'll care to do a swap :)


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 Post subject: Re: WD10EACS-00ZJB0 - no apparent fault but no access to LBA
PostPosted: August 11th, 2010, 7:46 
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Joined: October 4th, 2007, 6:20
Posts: 59
Location: Germany
get compatible donor and try hot swap first before any physical work on the drive.


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 Post subject: Re: WD10EACS-00ZJB0 - no apparent fault but no access to LBA
PostPosted: August 11th, 2010, 8:57 
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Joined: November 9th, 2006, 15:15
Posts: 2984
In my experience, I find Hulk family is not so good for HotSwap as compatible donor with close adaptives is difficult to source...


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 Post subject: Re: WD10EACS-00ZJB0 - no apparent fault but no access to LBA
PostPosted: August 11th, 2010, 10:14 
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Joined: October 13th, 2008, 7:29
Posts: 1493
any WD10EACS-00ZJB0 should be sufficient for hot swap I believe, could be wrong though.


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 Post subject: Re: WD10EACS-00ZJB0 - no apparent fault but no access to LBA
PostPosted: August 11th, 2010, 10:22 
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Joined: August 12th, 2008, 13:11
Posts: 3235
Location: USA
HDD Spaz wrote:
any WD10EACS-00ZJB0 should be sufficient for hot swap I believe, could be wrong though.

Not the case in my experience

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