Hi,

The HDD came with problematic ROM.

Can read ROM,
Can read all modules of ROM Except "47"
The Head Map shows Wrong

I've been able to read TRACKS from SA with a loader+donor rom, tried to regenerate ROM, it produced following 4 modules - [0B 0D 4F 30], also ROM.

47 and 0A still can't be produced.

WD20NMVW-11AV3S2
PCB: 1961 - Converted to SATA 1959

Any assistance would be highly appreciated

Patient & Regenerated ROM is attached

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There is no substitute for education and experience
THANK YOU
SHAHI
shahi.mahbub@gmail.com

if rebuild is not working, what about checking ROM ver from SA tracks and ask here or try to find it from other sources.
just a thought.

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Data Recovery Pakistan

I used DONOR ROM + LDR to gain SA Access and was able to Read Tracks. also, I've extracted Modules from Tracks.

I used different combination of ROM+LDR while I got access there.

I've attached the modules 102-109 [107 doesn't exist]

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There is no substitute for education and experience
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SHAHI
shahi.mahbub@gmail.com

Yes, the test confirms the issue with ROM and 47 as reported in the first run.

The attached modules 102-106 have no contents, those are blank, only 108 and 109 contains info

_________________
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There is no substitute for education and experience
THANK YOU
SHAHI
shahi.mahbub@gmail.com

Thanks for your assistance, I'll update you once I get any findings

_________________
__________
There is no substitute for education and experience
THANK YOU
SHAHI
shahi.mahbub@gmail.com

Yes, as customer confirmed it is untouched, and also it looks like untouched to me. I'll discuss again with the customer.

What can be done with WDR on 47?

_________________
__________
There is no substitute for education and experience
THANK YOU
SHAHI
shahi.mahbub@gmail.com

@shahij, there is nothing wrong with the patient ROM. The problem is that your tool doesn't understand that it should be using the directory in module 20B rather than 0B.

See your thread at the HDD Oracle.

_________________
A backup a day keeps DR away.

forty seven

No, there is not abnormal noise, it spins smooth without any issue.

The HDD came up as no ID, converted to SATA and in Kernel Mode it showed
Heads number : .................................: 0
Heads number in use : ..........................: 0
heads map : ....................................: [Blank]

Tried to Backup ROM and ROM Modules and found 47 is inaccessible and couldn't backup.

Then used DONOR ROM +LDR to gain access to SA, failed. Then modified DIR starting address, and was able to gain access to SA, and also was able to read Tracks.

That's all.

I've also checked another SHREK LT HDD and found everything is accessible by the tool in use "MRT"

_________________
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There is no substitute for education and experience
THANK YOU
SHAHI
shahi.mahbub@gmail.com

Thanks drHDD for the generated 47. I've just rewrote all original ROM, It's modules and the 47 by drHDD. now the drive comes Ready immediately but get busy once tried to access in Utility.

Will edit dir to get access and will update here

@spildit, no, all Tracks were read smooth without any issue!

_________________
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There is no substitute for education and experience
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SHAHI
shahi.mahbub@gmail.com

Strange thing is that - now the new generated 47 is reporting ERROR at the first time it did!!!



Follwing pics represents existing condition with original ROM/modules as exactly while received the HDD

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There is no substitute for education and experience
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I mean ABA starting address in ROM



Fixed the 0A issue by editing HEAD MAP in ROM

Preparing to get access to SA now

_________________
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There is no substitute for education and experience
THANK YOU
SHAHI
shahi.mahbub@gmail.com

I've been able to access SA with original ROM, though it's reporting 47 error.

I changed the Head Map on 0A.

Accessed to SA with original ROM + Original Loader

Here is the module 02 attached

_________________
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There is no substitute for education and experience
THANK YOU
SHAHI
shahi.mahbub@gmail.com

The case Is solved. Rom Is fine. 0A mod were Bad. Its fixed by editing the Head map. The traditional process of patching 02 didnt work. It keeps the drive busy once tried to Access.
Donor 02 helped to solved. Ill expect the original 02 to be patched.

Ive a same model HDD. Ive checked and found 47 Is ok on This one by the same tool. The tool Is not issue.

After writing the mod02 from donor, data area accessible as well as 47 reports fine.

I also tested the 0A, its reporting the same before fixing and after fixing the hdd.

_________________
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There is no substitute for education and experience
THANK YOU
SHAHI
shahi.mahbub@gmail.com

Im in phone now, not in pc. I didnt use the slow issue fix button on the tool. Tried to patch 02 in hex. It didnt work. Used donor 02 to get quick Access and it worked. See the above 02 n patch it. Let me wrire it to check

_________________
__________
There is no substitute for education and experience
THANK YOU
SHAHI
shahi.mahbub@gmail.com

Oh, i see u have already patched 02. Will test tomorrow. Thanks for all the thongs

_________________
__________
There is no substitute for education and experience
THANK YOU
SHAHI
shahi.mahbub@gmail.com

@Spildit, here is the possible lock in mod 02:

Try changing the 01 to 00 and re-post the patched mod 02 so the op can see if that unlocks it.

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I have edited the Head Map in ROM instead of using DONOR, it worked.

No, no one touched the case, I've confirmed with customer. It's gone bad while it was connected to PC.

No, I tested things, but with keeping original backup. And the issues were found while I received the case. As the Head Map info was showing bad as well as 47 was reporting error, That's why suspected ROM issue.



No, this is not MRT bug, I've confirmed by testing one of my another HDD from same family and same model.

Yes, I can post DONOR ROM.

DONOR ROM and 02 Is attached

I've reconfirmed with the customer, he is from my good source, nothing was done to the HDD.

_________________
__________
There is no substitute for education and experience
THANK YOU
SHAHI
shahi.mahbub@gmail.com

New problem arised.. The issue was fixed by DONOR Module

For test, I modified the Original 02, and wrote back again, and from then, I can't gain access to SA by any method.

Tried different condition of ROM+LDR, but can't access!

_________________
__________
There is no substitute for education and experience
THANK YOU
SHAHI
shahi.mahbub@gmail.com

Your patched Version 02 worked!

_________________
__________
There is no substitute for education and experience
THANK YOU
SHAHI
shahi.mahbub@gmail.com