WD20EARS Head Problem

[kennethwy]

Hi guys,

I'm a two day old UDMA user .

I'm working on a WDC WD20EARS-22MVWB0 hard drive and it has an exact symptom mentioned in one of Acelab video (WD20EARS-00MVWB0 COMMON PROBLEM WITH HEADS MAP). I followed through the steps

SA Checking

Modules.png (52.49 KiB) Viewed 6555 times

Head Test

HeadTest.png (5.26 KiB) Viewed 6555 times

Sector View (before changing head map in RAM)

SectorViewError.png (13.12 KiB) Viewed 6555 times

Sector View (Changed all to 0 0 0 0 0 0 --> soft reset --> changed all back to 0 1 2 5 6 7 --> soft reset)
It read sectors

SectorViewOK.png (51.83 KiB) Viewed 6555 times

Now when we turn the HDD off, everything back to square one as expected. We do not own DE just yet, we are using Deepspar DDI to image HDD.

Question
1. Can UDMA disable head no. 4 so that we can image the drive in DDI4? Read some info from WDC_en.pdf page 36 (Software deactivation of drive heads) is this the way?

2. What other alternative do we have without DE?

Any advise will be very much appreciated.

Thanks

Best Regards

[kennethwy]

Hi all,

I made SA backup before all the tests mentioned earlier.

I'm aware of the article on Acelab's blog too (http://blog.acelab.eu.com/ram-head- ... -case.html) which explain the situation quite clearly. But of course it explain how to do it with Data Extractor, which we do not have.

DDI4 allows us to disable faulty head too, would it work for this case?

Thanks

Best Regards

[Amarbir[CDR-Labs]]

Source of the post Hi guys,

I'm a two day old UDMA user .

I'm working on a WDC WD20EARS-22MVWB0 hard drive and it has an exact symptom mentioned in one of Acelab video (WD20EARS-00MVWB0 COMMON PROBLEM WITH HEADS MAP). I followed through the steps

SA Checking

Modules.png

Head Test

HeadTest.png

Sector View (before changing head map in RAM)

SectorViewError.png

Sector View (Changed all to 0 0 0 0 0 0 --> soft reset --> changed all back to 0 1 2 5 6 7 --> soft reset)
It read sectors

SectorViewOK.png

Now when we turn the HDD off, everything back to square one as expected. We do not own DE just yet, we are using Deepspar DDI to image HDD.

Well,
Do Not Turn HDD OFF At this stage .You connect DDI group and the pc3k ground to same potential by a wire ,Then once you do all these steps just remove the data signal cable from hdd of pc3k and interface the ddi data cable .At this stage the power is controlled and maintained by PC3k but drive is controlled by DDI .

PS : Please increase my reputation if you like my post

[DataMedics]

You can get by like Amarbir says for a little bit, just swapping the SATA cable and not powering off. I had a special cable I made up for just this purpose for a few weeks when I first bought PC-3000. However in the end, you'll need to buy DE to unlock the full potential of the PC-3000. Without it, you won't be able to do a number of things like read through utility, decrypt WD USB drives, etc.

I think I lasted two weeks before I caved and bought the software. Now, I couldn't imagine trying to do this work without it.

[kennethwy]

Source of the post You can get by like Amarbir says for a little bit, just swapping the SATA cable and not powering off. I had a special cable I made up for just this purpose for a few weeks when I first bought PC-3000. However in the end, you'll need to buy DE to unlock the full potential of the PC-3000. Without it, you won't be able to do a number of things like read through utility, decrypt WD USB drives, etc.

I think I lasted two weeks before I caved and bought the software. Now, I couldn't imagine trying to do this work without it.

Hi DataMedics,

Thanks for the advise. I guess you are right, I found a way to do it but it is not efficient at all
Thanks again DataMedics