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 Post subject: WD10JMVW-11AJGS2 BUSY
PostPosted: September 21st, 2018, 13:31 
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Hi.
I changed the controller to the HDD with a SATA.
The HDD enters the busy state.
If I deactivate the module 411 I have access to the SA without problems.
I have resolved slow response.
When I activate the module 411 again, it enters BUSY.
I put a copy of the ROM.

Any ideas. Thank you.


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ROM.zip [242.83 KiB]
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 Post subject: Re: WD10JMVW-11AJGS2 BUSY
PostPosted: September 21st, 2018, 14:15 
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It gives a reading error in a sector of the module 0x21 and another of the module 0x31 of the head 1.
The SA of the head 0 reads it correctly.

There is an error in reading tracks:
Read Track error C / H / S: -246/1/965
Save the module: 0021 Copy1: ...................: OK

There is an error in reading tracks:
Read Track error C / H / S: -254/1/965
Save the module: 0031 Copy1: ...................: OK

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 Post subject: Re: WD10JMVW-11AJGS2 BUSY
PostPosted: September 21st, 2018, 18:18 
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What is the function of mod 411? Could you upload it?

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 Post subject: Re: WD10JMVW-11AJGS2 BUSY
PostPosted: September 22nd, 2018, 3:09 
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fzabkar wrote:
What is the function of mod 411? Could you upload it?

I do not know what the function of mod 411 is.
It is a microcode module and if it is disabled in the ROM it prevents the hDD from reading the module 411 and having access to the SA.
I put a copy of this module (ORGINAL and DONOR, although they are the same).
When the module 411 is deactivated, part of the firmware is loaded, but the module 0x21,0x31,0x34, etc. seems to be not loaded.


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411.rar [75.05 KiB]
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 Post subject: Re: WD10JMVW-11AJGS2 BUSY
PostPosted: September 22nd, 2018, 5:58 
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It does not let me format tracks of the SA or write modules in HEAD 1.
When reading the SA in the head 1 gave failures.
I format the sa of the head 2 and I record the tracks of the SA of the copy 0.
In the ROM (0B / 2B) I modify the ABA range so that the second value points to the copy I made with the head 2.
I activate the 411 and it detects everything correct but as it is expected the head 1 is weak and it reads very slowly and with some defective sectors.
I make a copy of everything I can and then I'll change the heads

I correct, the heads are fine, it is the surface of the disk of the head 1. I do not change heads.

Thanks to everyone for your inconveniences and especially to @fzabkar, for their always selfless help towards everyone.


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MRT Image.jpg
MRT Image.jpg [ 384.24 KiB | Viewed 790 times ]

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 Post subject: Re: WD10JMVW-11AJGS2 BUSY
PostPosted: September 22nd, 2018, 11:42 
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fzabkar wrote:
What is the function of mod 411? Could you upload it?

transient overlay.


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 Post subject: Re: WD10JMVW-11AJGS2 BUSY
PostPosted: September 22nd, 2018, 16:11 
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BGman wrote:
fzabkar wrote:
What is the function of mod 411? Could you upload it?

transient overlay.

We can all see what it is, but what does it do?

Code:
Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

00000050                          54 52 41 4E 53 4F 56 4C          TRANSOVL

I don't understand the MRT screenshot. It shows module 0x411 at ROM address 0x3F03E with a size of 0xD0 bytes. That's module 0x0D, not 0x411. :?

Code:
Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

0003F030                                            52 4F                RO
0003F040  59 4C 04 00 1E 00 0D 00 01 00 55 58 D0 3E 30 30  YL........UXÐ>00
0003F050  30 31 30 30 30 30 00 00 00 00 00 00 00 01 30 31  010000........01
0003F060  2E 30 31 41 30 31 00 01 03 02 00 00 50 01 4E E6  .01A01
0003F070  06 3F 56 80 07 01 FE FF 00 00 00 00 42 01 01 01
0003F080  00 01 00 00 57 44 43 20 57 44 31 30 4A 4D 56 57  ....WDC WD10JMVW
0003F090  2D 31 31 41 4A 47 53 32 20 20 20 20 20 20 20 20  -11AJGS2       
0003F0A0  20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20
0003F0B0  20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20
0003F0C0  00 00 00 00 00 00 32 00 00 00 04 01 00 01 00 00
0003F0D0  00 00 A7 45 51 C2 57 F5 DA 96 00 00 00 00 20 20
0003F0E0  20 20 20 20 20 20 4E 4F 5F 50 43 42 41 5F 53 4E        NO_PCBA_SN
0003F0F0  5F 50 4F 50 55 4C 41 54 45 44 20 20 20 20 20 20  _POPULATED     
0003F100  20 20 22 C8 00 B0 29 A9 00 B0 E3 0D 5A 10

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 Post subject: Re: WD10JMVW-11AJGS2 BUSY
PostPosted: September 22nd, 2018, 17:01 
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Module 0x411 appears to consist of several components, each of which is loaded into a separate area of RAM.

viewtopic.php?f=13&t=37421&p=263949#p263949

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 Post subject: Re: WD10JMVW-11AJGS2 BUSY
PostPosted: September 22nd, 2018, 18:58 
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This screen capture occurs when the 0x411 module is deactivated.
The MRT shows that there is a 0x411 module in the ROM. But that is not correct, it happens due to the fact of deactivating in the ROM the access to the module 0x411, I do not know the reason.
It would be interesting to know what implementations the 0x411 module performs, I suppose they have removed part of the 0x11 module to make it lighter and better manage the RAM (It's a guess, I have no idea).

I did a test in case it was a problem of the load of the translator and modify the size directly in the module of directions, and since from one direction they were all zeros the checksum remained the same and I loaded it in the RAM with the new size .

When I finish copying data I will make the test to point the 2 ABA of the head 1 and 2 towards the same address in the head 1 and if it works, when a HDD of these has a bad copy of the SA, it could be solved simply by changing the address of the ABA.

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 Post subject: Re: WD10JMVW-11AJGS2 BUSY
PostPosted: September 22nd, 2018, 19:00 
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When I finish the copy I will pass a copy of the ROM with the 0x411 module deactivated in case someone is curious.

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 Post subject: Re: WD10JMVW-11AJGS2 BUSY
PostPosted: September 22nd, 2018, 19:33 
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By pointing the two directions of ABA towards the same copy of the SA the HDD also works well.

Greetings.

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 Post subject: Re: WD10JMVW-11AJGS2 BUSY
PostPosted: September 22nd, 2018, 20:10 
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mhp666 wrote:
This screen capture occurs when the 0x411 module is deactivated.
The MRT shows that there is a 0x411 module in the ROM. But that is not correct, it happens due to the fact of deactivating in the ROM the access to the module 0x411, I do not know the reason.

That's an interesting trick. It would suggest that disabling a particular SA module could be achieved by renaming ROM module 0Dh. I wonder if this trick works for other modules?

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 Post subject: Re: WD10JMVW-11AJGS2 BUSY
PostPosted: September 22nd, 2018, 21:01 
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@mhp666, is your drive a SED? Could you upload module 02h? This module has a SED flag.

I'm wondering if we could patch module 02 into a spare area of the ROM and then edit 0B/20B to point to it. We could switch off the SED flag and then see if the drive starts normally, with SA access enabled.

If this works, then we might find other uses for this technique.

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 Post subject: Re: WD10JMVW-11AJGS2 BUSY
PostPosted: September 23rd, 2018, 16:00 
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I had to read about 6000 sectors of the disk that I could not read.
I have reduced small vibrations to the disk, and possibly the heads have come closer to the data and read them very quickly.
The needles from 10% of the disc already read well and fast.
Does anyone know why this happens. Heads or surface?
I know it is not very orthodox, but when I had almost 100% of the data and decided to try it.

I put a copy of the module 0x02.


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0x02.rar [1.31 KiB]
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 Post subject: Re: WD10JMVW-11AJGS2 BUSY
PostPosted: September 23rd, 2018, 16:31 
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What parameters can I follow to find a donor of a WD, to exchange heads?
HEAD AND MEDIA?

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 Post subject: Re: WD10JMVW-11AJGS2 BUSY
PostPosted: September 23rd, 2018, 17:05 
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The SED flag in module 02 is not set. :?

Code:
Offset(h) 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

000007E0                                00 00 00 00 00 00
000007F0  00

Headstack matching for Western Digital:
http://www.hddoracle.com/viewtopic.php?f=86&t=1036

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 Post subject: Re: WD10JMVW-11AJGS2 BUSY
PostPosted: September 24th, 2018, 2:12 
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I can not identify the microjobs in this module.
Can somebody help me?


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 Post subject: Re: WD10JMVW-11AJGS2 BUSY
PostPosted: September 24th, 2018, 16:41 
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mhp666 wrote:
I can not identify the microjobs in this module.

See https://forum.acelaboratory.com/viewtopic.php?t=9504

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 Post subject: Re: WD10JMVW-11AJGS2 BUSY
PostPosted: September 25th, 2018, 12:06 
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mhp666 wrote:
What parameters can I follow to find a donor of a WD, to exchange heads?
HEAD AND MEDIA?


I've found you don't need to worry about microjogs for this model, just match the TJ or T2 or VJ in the DCM on the label and the heads should be compatible.


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 Post subject: Re: WD10JMVW-11AJGS2 BUSY
PostPosted: September 25th, 2018, 14:43 
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fzabkar wrote:
I've found you don't need to worry about microjogs for this model, just match the TJ or T2 or VJ in the DCM on the label and the heads should be compatible.


Thank you. When I can get a record I'll do some tests.

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