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Data recovery and disk repair questions and discussions related to old-fashioned SATA, SAS, SCSI, IDE, MFM hard drives - any type of storage device that has moving parts
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Modifying NVRAM

September 14th, 2018, 5:33

Is there a way to modify my NVRAM to enable reading and writing SA data in an ATA lock drive (HDS724040...).
I already tried disabling system and non-system heads but to no avail.
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Re: Modifying NVRAM

September 14th, 2018, 6:58

If heads are OK, the problem must be with SA modules. You need to upload compatible loader to work with SA.

Re: Modifying NVRAM

September 14th, 2018, 7:33

The hard drive is password locked. As far as I know ARM drives are able to work with SA on partially initialized PCB. And that is what I want, to stop drive from loading SA so I could upload SECI module.

Re: Modifying NVRAM

October 1st, 2018, 18:28

Where are you from ? Are you based in Europe ?

Are you willing to pay for unlocking ?

Re: Modifying NVRAM

October 5th, 2018, 6:42

Yes, I live in Europe. I read some of your posts and if You thinking about using Sediv or SalvationDATA then forget it.

Re: Modifying NVRAM

October 5th, 2018, 10:54

Maybe your model require for you to load code in RAM to gain access to modules ?

Re: Modifying NVRAM

October 6th, 2018, 7:38

Could you upload a copy of the ROM?

Re: Modifying NVRAM

October 6th, 2018, 15:49

Or maybe you are doing something wrong ... ?

Re: Modifying NVRAM

October 6th, 2018, 15:50

Did you try to unlock it with SeDiv ? What does happen when you do so ? Does it change the NVRam even if it can't replace/patch the security module ?

Re: Modifying NVRAM

October 7th, 2018, 10:00

Ok .... I think that i know what the problem is ...

SeDiv doesn't even read modules on some models of HGST even if they are unlocked ... I think it's the case with the OP model as well ...

As long as the drive doesn't have any special lock like SED/Encryption and as long as it's still ARM IBM BASED (HGST) or whatever and it's NOT something like newer He filled drives i should still be able to unlock those with HRT or even by VSC.

Re: Modifying NVRAM

June 25th, 2019, 10:44

Sorry for responding so late. I thought that I will receive an email when someone post in this threat but apparently that is not the case.
So this hard drive is patiently waiting for unlocking.
SeDiv supports this family, it reads and writes modules on my other drives but it doesn't do unlocking. It shows that is writing to NVRAM but NVRAM is not changed at all. I don't think that there is a way to abuse NVRAM in this model like it is in other ones.
Loader is probably the only way to go. I created one and it worked when I tested it on initialized drive, but when it was downloaded to uninitialized one it clicked. So maybe it needs more modules to be included.
I'm pretty sure that it would be easy to do using PC3000...

Re: Modifying NVRAM

June 25th, 2019, 15:28

Are you removing the PCB when unlocking with SeDiv ? A Locked drive will not allow writting to NVRam.

Also if there are no copy F it might be harder to unlock ...

Re: Modifying NVRAM

June 25th, 2019, 16:26

Please believe me Spildit when I said that SeDiv does not unlock this drives.
I tried modifying NVRAM myself by changing its various parts but all for nothing.
And yes there is no SECI factory module and it is different in every drive but I don't know if its unique to the drive.

Re: Modifying NVRAM

June 25th, 2019, 16:35

Ok ....

Maybe PC-3000 then ?
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