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WD10EACS - all modules OK but won't read LBA
http://forum.hddguru.com/viewtopic.php?f=11&t=13608		 Page 1 of 1
Author:  yco [ October 9th, 2009, 4:48 ]
Post subject:  WD10EACS - all modules OK but won't read LBA
Hi to all Gurus!

HDD spins up and cmes do DRD DSC. ID is being read, all seems to be fine but drive won't read any LBA.
Checked modules but no corruption there. Looks similar to tranaslator corruption so I cleared G-List and regenerated translator but still the same problem. Ran Head test and all passed.

Has anyone had similar case before? It is first time I got something like this.

HDD details:
Model: WDC WD10EACS-00ZJB0 (Hulk)
Firmware: 01.01B01
Capacity: 931.51GB (1953525168)

Code:
Techno mode key
Techno mode key......................... : Ok

RAM:
Zone allocation table................... : Ok
Cyl Count............................... : 86
SA SPT.................................. : 1280

Head number reading..................... : Ok
Heads number............................ : 8

ROM:
Flash Dir reading....................... : Ok
ROM reading............................. : Ok
ROM Data size........................... : 192 Kb
ROM version............................. : 5B.0ED
ROM generation.......................... : 5B.0ED
Link table version...................... : 01.18.
Heads configuration..................... : by map
Heads number............................ : 8
Heads number in use..................... : 8
Switched off heads...................... : No
Head map................................ : 0,1,2,3,4,5,6,7

Firmware version........................ : 005B000E

Service area:
SA dir reading.......................... : Ok
SA Copies avalabled..................... : Copy 0,Copy 1

Configuration reading................... : Ok
Master Password......................... : has not been set
User Password........................... : has not been set


When starting logical test I get:

Quote:
Logical scan
****************************************************************
Initial LBA............................. : 0
Final LBA............................... : 1 953 525 167
Data exchange mode...................... : UDMA66
Surface verification.................... : Yes
Random read............................. : No
Writing................................. : No
Reading................................. : No
HDD cache RAM test...................... : No
Scan direction.......................... : Forward
Pass count.............................. : 1
Save defects............................ : No
Don`t search sector where error occured. : No
HDD timeout............................. : 200 ms.
One LBA commands timeout................ : 30 ms.
****************************************************************

Pass.................................... : 1

Test.................................... : Surface verification
ERROR! LBA : 0 Verification error 48-bit (ABR)
ERROR! LBA : 1 Verification error 48-bit (ABR)
ERROR! LBA : 2 Verification error 48-bit (ABR)
ERROR! LBA : 3 Verification error 48-bit (ABR)
ERROR! LBA : 4 Verification error 48-bit (ABR)
ERROR! LBA : 5 Verification error 48-bit (ABR)
ERROR! LBA : 6 Verification error 48-bit (ABR)
ERROR! LBA : 7 Verification error 48-bit (ABR)
ERROR! LBA : 8 Verification error 48-bit (ABR)
ERROR! LBA : 9 Verification error 48-bit (ABR)
ERROR! LBA : 10 Verification error 48-bit (ABR)



Attached SA structure test report.
Any idea about that?

Attachments:
SA structure test.zip [7.59 KiB]
Downloaded 564 times
Author:  N.C. [ October 9th, 2009, 7:24 ]
Post subject:  Re: WD10EACS - all modules OK but won't read LBA
I have now this one too.
In my case, the recalibration is failed, because one head is KO.

Janos
Author:  pcimage [ October 12th, 2009, 11:23 ]
Post subject:  Re: WD10EACS - all modules OK but won't read LBA
try reading some LBA's from the end of the drive
Author:  hddguy [ October 12th, 2009, 11:48 ]
Post subject:  Re: WD10EACS - all modules OK but won't read LBA
The HDD has at least one defective head. sometimes head test will reveal a damaged head, but in many cases all will appear OK. you need to determine which head is damaged, you can do this by using new HEad Map Edit feature to pair heads individually and sequentially until you can read sector with 'Sector Edit' option.

I have never managed hotswap on Hulk family, but have recovered many with these symptoms via head map changing in RAM.
Author:  yco [ October 13th, 2009, 10:41 ]
Post subject:  Re: WD10EACS - all modules OK but won't read LBA
Head test shows all heads OK. Will try to experiment with head map in RAM.
Author:  Zero Alpha [ October 15th, 2009, 2:52 ]
Post subject:  Re: WD10EACS - all modules OK but won't read LBA
This is a very common symptom for WD now. You can try imaging in reverse and adjusting the read settings.
Author:  hddguy [ October 15th, 2009, 7:03 ]
Post subject:  Re: WD10EACS - all modules OK but won't read LBA
Zero Alpha wrote:
This is a very common symptom for WD now. You can try imaging in reverse and adjusting the read settings.


This will not work. No single sector is accessible because the translator is not completely loaded.
Author:  lcoughey [ October 15th, 2009, 9:38 ]
Post subject:  Re: WD10EACS - all modules OK but won't read LBA
I had the exact same model with the same issue several months ago. The value of the data was not enough for me to play further. You may want to try a smart hot swap to see if that helps, but I suspect that it is a combination of heads and media. This, by far, is the most annoying symptom of the ROYL series, IMHO.

If anyone has found a work around for this, I'd love to know what it is, before we see another one. The next time we get one, I'll be sure to spend more time trying to figure it out...even if I have to do it for next to nothing. No, this is not an invite for everyone to dump these drives on me...just in case it crossed your mind.

I just noticed the previous comment and agree...it does seem as though the translator just isn't loading all the way, or at all. When looking at the modules, there doesn't seem to be any obvious damage.
Author:  hddguy [ October 15th, 2009, 11:32 ]
Post subject:  Re: WD10EACS - all modules OK but won't read LBA
The problem is usually with one or more head. the Translator is unable to load completely because it identifies a defective head, or a head that is unable to accurately read. You can access the data via head map editing assuming you are able to identify the damaged head. Alternatively hotswap will work, but as the fault is head related you will still need to know which head is defective in order to exclude it in Head Map creation.
Author:  yco [ October 19th, 2009, 4:32 ]
Post subject:  Re: WD10EACS - all modules OK but won't read LBA
Tried Head Map editing in RAM (available in new UDMA Marvel utility) and it actually gives good result so far. After disabling Head7 and soft-reset it allows sector access in DataExtractor. Created Head Map in DE and unchecked Head7 and image is running well so far..
Author:  hddguy [ November 12th, 2009, 5:53 ]
Post subject:  Re: WD10EACS - all modules OK but won't read LBA
good Job
Author:  yco [ November 24th, 2009, 10:54 ]
Post subject:  Re: WD10EACS - all modules OK but won't read LBA
Customer was looking mainly for photos which were recovered in about 80%. Customer was happy enough :)
Author:  zebong [ November 24th, 2009, 15:21 ]
Post subject:  Re: WD10EACS - all modules OK but won't read LBA
good work :)
Author:  guru [ December 2nd, 2009, 5:07 ]
Post subject:  Re: WD10EACS - all modules OK but won't read LBA
on this family I have seen duff head 7 commonly along with head 5 sometimes.
Author:  hddguy [ December 2nd, 2009, 9:13 ]
Post subject:  Re: WD10EACS - all modules OK but won't read LBA
guru wrote:
on this family I have seen duff head 7 commonly along with head 5 sometimes.


I agree. Usually one of the final heads. Do not see many with damage to one of the first heads.
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