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fzabkar
 Post subject: Rebuilding lost adaptives
PostPosted: November 18th, 2016, 17:10 
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I'm wondering if the following methodology would enable a missing ROM to be reconstructed, assuming there existed a suitable burn-in/selfscan procedure for the target model.

    Transplant patient heads to donor drive
    Run burn-in/selfscan against donor drive
    Return patient heads to patient drive
    Transfer new burn-in adaptives or entire PCB from donor to patient
    Edit serial number, etc.

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guru
 Post subject: Re: Rebuilding lost adaptives
PostPosted: November 18th, 2016, 18:42 
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Can't see it working at all using SS, however I would love to read about someone trying! There are potential methods, much the same as Brute-Forcing passwords.

Fujitsu MPG adaptive values could be brute-forced :D that's for sure.


Or, just talk nicely to the manufacturer and they could supply original "adaptives"...IF they really wanted.

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Spildit
 Post subject: Re: Rebuilding lost adaptives
PostPosted: November 19th, 2016, 6:10 
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This would only matter mainly on Seagate F3 and Toshiba as there are other methods for other brands that wouldn't require to remove the heads like trying several ROM files on WD and getting the copy from the platters.

On Seagate F3 and Toshiba you wouldn't be able to SS at all you would gain nothing, unless you have some sort of factory code to run the SS or to regen the adaptives on those drives to start with.

So you would be back to square one...

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pepe
 Post subject: Re: Rebuilding lost adaptives
PostPosted: December 14th, 2016, 19:30 
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@guru: Even SRS was unable to recover F3 with lost rom, do you think they couldn't ask nice enough?
However, head adaptives are not hard to recover, media adaptives are the though part...

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xsoliman
 Post subject: Re: Rebuilding lost adaptives
PostPosted: December 15th, 2016, 15:24 
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Do I take it from the post above that there are head adaptives (probably in relation to optimal write current and read biasing etc?) as well as media adaptives
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pepe
 Post subject: Re: Rebuilding lost adaptives
PostPosted: December 16th, 2016, 7:22 
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yes.

pepe

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Martin
 Post subject: Re: Rebuilding lost adaptives
PostPosted: January 2nd, 2017, 13:27 
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Spildit wrote:
This would only matter mainly on Seagate F3 and Toshiba as there are other methods for other brands that wouldn't require to remove the heads like trying several ROM files on WD and getting the copy from the platters.

On Seagate F3 and Toshiba you wouldn't be able to SS at all you would gain nothing, unless you have some sort of factory code to run the SS or to regen the adaptives on those drives to start with.

So you would be back to square one...

So, you want to say, that lost original pcb for WD or Hitachi ARM is not a problem/not Actually? :)

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Spildit
 Post subject: Re: Rebuilding lost adaptives
PostPosted: January 2nd, 2017, 19:56 
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Martin wrote:
Spildit wrote:
This would only matter mainly on Seagate F3 and Toshiba as there are other methods for other brands that wouldn't require to remove the heads like trying several ROM files on WD and getting the copy from the platters.

On Seagate F3 and Toshiba you wouldn't be able to SS at all you would gain nothing, unless you have some sort of factory code to run the SS or to regen the adaptives on those drives to start with.

So you would be back to square one...

So, you want to say, that lost original pcb for WD or Hitachi ARM is not a problem/not Actually? :)


Lost original PCB for WD is NEVER a problem.

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Amarbir[CDR-Labs]
 Post subject: Re: Rebuilding lost adaptives
PostPosted: January 3rd, 2017, 0:40 
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Location: CDRLabs @ Chandigarh [ India ]
Spildit wrote:
Martin wrote:
Spildit wrote:
This would only matter mainly on Seagate F3 and Toshiba as there are other methods for other brands that wouldn't require to remove the heads like trying several ROM files on WD and getting the copy from the platters.

On Seagate F3 and Toshiba you wouldn't be able to SS at all you would gain nothing, unless you have some sort of factory code to run the SS or to regen the adaptives on those drives to start with.

So you would be back to square one...

So, you want to say, that lost original pcb for WD or Hitachi ARM is not a problem/not Actually? :)


Lost original PCB for WD is NEVER a problem.


Spildit ,
How About Hitachi ARM Series ?

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Martin
 Post subject: Re: Rebuilding lost adaptives
PostPosted: January 3rd, 2017, 15:18 
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Are we talking about all WD?

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