WD20NMVW No Micro Jog Measurements

[ddrecovery]

This drive was dropped to more than likely has head damage. Its a USB drive so I swapped the ROM from to a matching SATA board. Drive still clicks and shuts down which is not surprising. Howver the board does not return micro jog information? Why would that be?

Techno mode key
Techno mode key......................... : Ok

RAM:
HDD Info reading........................ : Ok
Heads number............................ : 8
Cyl Count............................... : 256

ROM:
ROM reading............................. : Ok
ROM Data size........................... : 256 Kb
ROM version............................. : 01.0GG
ROM generation.......................... : 01.0GG
Link table version...................... : 00.04.
Consolidated ROM version................ : 0001000G

ROM Modules:
Flash ROM dir reading................... : Ok
Flash ROM dir reading (Ext)............. : Ok (Active)
Modules directory address............... : 318 347
SA regions address...................... : by default
SA Translator loading................... : Ok

Heads configuration..................... : by map
Heads number............................ : 8
Heads number in use..................... : 8
Switched off heads...................... : No
Heads map............................... : 0,1,2,3,4,5,6,7
ROM Firmware version.................... : 0001000G


View ROM information
ROM Data size........................... : 256 Kb
Firmware version........................ : 0001000G
Heads configuration..................... : by map
Heads number............................ : 8
Heads number in use..................... : 8
Switched off heads...................... : No
Heads map............................... : 0,1,2,3,4,5,6,7

ROM Modules
------------------------------
ID : Description
------------------------------
0A : Heads map
0B : Flash ROM dir
20B : Flash ROM dir (ext)
30 : SA Translator
47 : SA Adaptives
0D : Flash configuration
4F : Microprogram version

SA Regions
------------------------------
N : ABA : Size
------------------------------
0 : 0 : 321 160
1 : 378 880 : 321 160
2 : 757 760 : 321 160
3 : 1 136 640 : 321 160
4 : 1 515 520 : 321 160
5 : 1 894 400 : 321 160
6 : 2 273 280 : 321 160
7 : 2 652 160 : 321 160

Micro Jogs
------------------------------
LH : PH : Micro Jog (Hex/Dec)
------------------------------
0 : 0 : 00/0
1 : 1 : 00/0
2 : 2 : 00/0
3 : 3 : 00/0
4 : 4 : 00/0
5 : 5 : 00/0
6 : 6 : 00/0
7 : 7 : 00/0

[ddrecovery]

Yes I can. It will be tomorrow as its beer time now and my chip off after a fat tire are never successful

[jono-ats]

The PC3K utility doesn't support it with that drive.

[fzabkar]

FWIW, here is how to find the microjogs in module 47 of a typical (?) WD ROM.

Headstack matching for Western Digital:
http://www.alexsoft.org/viewtopic.php?f ... =microjogs

You might like to try m4sterful's donor matching tool:
http://www.alexsoft.org/viewtopic.php?f=59&t=1009

[fzabkar]

I just checked module 47 in a WD20NMVW-11AVS30 ROM. It appears that there are zeros in the microjogs record.

Code:

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

000001E0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
000001F0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

[fzabkar]

I wonder if these are the microjogs ???

Code:

Offset(h) 00   02   04   06   08   0A   0C   0E

00000440            90EF 0000 CAEF 0000 C6EE 0000
00000450  BFEF 0000 CCEE 0000 D2EF 0000 0DEF 0000
00000460  C6EF 0000

[ddrecovery]

The PC3K utility doesn't support it with that drive.

Hi Jono
I have opened Mod 47 in PC3K and the microjog parameters still returns '00'. So....is it not supported in PC3K because the data is stored in a different offset in that particular module? I guess the question I should ask - is this just a peculiarity with this drive and not something wrong with the ROM mod and should not affect a head swap

@fzabkar - Thanks for that link, really good reading.... I have also attached the ROM from this drive and I would agree that pattern in hex does correspond to the number of heads, so I think you are correct.

Attachments

Mod 47.7z

(743 Bytes) Downloaded 524 times

[pcimage]

It's a known issue with Shrek drives in PC3K, according to TS they are working on a fix.

[Dmitri]

I have also attached the ROM from this drive...

Could you also mention what processor it uses (88xZZZZ) and PCB number (2060-xxxx)?

[ddrecovery]

Could you also mention what processor it uses (88xZZZZ) and PCB number (2060-xxxx)?

Hey Dmitri
88i9446-NDB2
2060-771961-001 REV A

[Dmitri]

88i9446-NDB2

Thanks, it looks like my head needs some rest this Friday night. I expected 88i1zzz.