Seagate AFH

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MasterT
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Seagate AFH

Postby MasterT » 19.01.19, 11:24

How to adjust the head temperature to recover head damaged hard drives?

https://www.youtube.com/watch?v=KKY1Nj2Uleo

https://www.recoveryforce.com/forums/vi ... f=25&t=479

Is it possible on PC3000 ?


LarrySabo
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Re: Seagate AFH

Postby LarrySabo » 19.01.19, 16:13

Here's the version easier to understand for those who don't read Chinese: https://www.youtube.com/watch?v=23NMtMQK6JI

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DataMedics
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Re: Seagate AFH

Postby DataMedics » 20.01.19, 16:26

It's possible using some Excel-foo and a ZOC script: https://www.youtube.com/watch?v=W9KbKw57GxI

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Takanashi_Hina
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Re: Seagate AFH

Postby Takanashi_Hina » 21.01.19, 01:43

Here : - http://www.hddoracle.com/viewtopic.php? ... 682#p19850

You can do that by hand with terminal.
The HDD Oracle - Platform for OPEN research on Data Recovery.


MasterT
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Re: Seagate AFH

Postby MasterT » 22.01.19, 13:44

Thank you all for your sugestions.

I hope ACE will implement this in their software.

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DataMedics
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Re: Seagate AFH

Postby DataMedics » 22.01.19, 17:26

MasterT wrote:Source of the post Thank you all for your sugestions.

I hope ACE will implement this in their software.


I'm still not sure how much benefit it is. I've yet to find a case where it's helping. But, I'll keep trying it after I've exhausted most conventional means to see if I can find a case where it's of any real benefit. I had one case where it seemed to read a bit better after adjusting it, but it could have just been a placebo effect too. It's hard to say. I'm still not certain that Dolphin didn't just "break" the drive on purpose by setting those values low enough the head stopped working, then adjusting it back to a normal range...

Maybe someone else has more experience with this.


Dmitriy_TS
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Re: Seagate AFH

Postby Dmitriy_TS » 24.01.19, 09:48

It's a very dangerous procedure for heads. And we haven't seen cases where it was useful.
So I'm sure that it will be implemented in PC-3000 in near future.
With best regards
ACELab technical support
ts.acelaboratory.com
blog.acelaboratory.com

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pclab
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Re: Seagate AFH

Postby pclab » 07.02.19, 20:04

I had a case a couple of weeks ago, where it was useful. Solved my case.

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DataMedics
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Re: Seagate AFH

Postby DataMedics » 11.02.19, 23:29

Okay, I can finally confirm that there is definitely some merit to this method. I had a Pharoah drive today that came in. Could get ID but would get instantly stuck busy. After modifying everything in firmware to stabilize it (disable reallocation,etc.) the drive would read but only at around 100-300kb/s max from either head. I boosted both heads by 20, head 0 started working fine and reading at 100Mb/s. Head 1 was still slow (reading around 1-2Mb/s max) until I boosted it by another 20 and now it's reading at around 60Mb/s. So a drive that definitely appeared to need replacement heads is now reading at a good speed and will be done in a couple hours.

It's not just a placebo effect, this definitely has merit. I can confirm that now. :D :D :D

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DataMedics
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Re: Seagate AFH

Postby DataMedics » 11.02.19, 23:37

Here's a picture showing the read speed difference when I made the AFH adjustments:
AFH Works.jpg
AFH Works.jpg (5.86 KiB) Viewed 4275 times

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Amarbir[CDR-Labs]
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Re: Seagate AFH

Postby Amarbir[CDR-Labs] » 17.03.19, 22:32

Well,
I Have Done Several Cases With Success Using This ,I Hope Acelab Implements This Very Usefull Procedure For Seagate Drives
Regards
Amarbir S Dhillon ,CDR Labs [ Chandigarh ,India ]
DataRecovery - The Affordable Way In India
Visit - > http://www.chandigarhdatarecovery.com My Facebook - > https://www.facebook.com/chandigarhdatarecovery

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houman_2h
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Re: Seagate AFH

Postby houman_2h » 11.04.19, 00:13

Dmitriy_TS wrote:Source of the post It's a very dangerous procedure for heads. And we haven't seen cases where it was useful.
So I'm sure that it will be implemented in PC-3000 in near future.

AFH is very useful for head And there is not danger . The head works better and faster without pressing and changing .


lcoughey
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Re: Seagate AFH

Postby lcoughey » 11.04.19, 14:49

I'd love to see this added to PC3000. It is one of the few features of MRT that I find useful because it makes it simple to do.


Fraser Corrance
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Re: Seagate AFH

Postby Fraser Corrance » 25.10.19, 01:51

Ace Labs,

Come on guys, this does have value in some situations. It probably is not a good idea on a drive with a really high G-sense error rate but there have been several cases I have had where this is a great way to avoid having to do a head swap.

I have also been doing some research on methods to rebuild damaged Seagate ROMs where this process is extremely useful.

Fraser


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