resources for WD40NMZW

[sathyan]

This drive WD 4TB drive (SpyGlass 2.5") USB drive stays busy
WD40NMZW-11GX6S1
converted to SATA , shifted SA regions Address, and detects and shows...

Techno mode key

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

RAM:
SA HDD has unknown capacity. SA CHS access may operates wrongly
HDD Info reading........................ : Ok
Heads number............................ : 10
Cyl Count............................... : 384

ROM:
Read ROM................................ : Ok
ROM Data size........................... : 512 Kb
Flash ROM dir reading................... : Ok
Flash ROM dir reading (Ext)............. : Ok (Active)
Modules directory address............... : 809 245
SA regions address...................... : shifted
Module 02 access........................ : Granted
SA Translator loading................... : Ok
SA defects assigned..................... : 5

ROM Modules:
ROM version............................. : 02.1PR
ROM F/W version......................... : 0002001P
Overlay F/W version..................... : 02.1PR
Servo F/W version....................... : F1.3R

Heads configuration..................... : by map
Heads number............................ : 10
Heads number in use..................... : 10
Switched off heads...................... : No
Heads map............................... : 0,1,2,3,4,5,6,7,8,9

Having read the warnings and difficulties regarding this model, trying to backup original modules first.
any help appreciated.
thanks

[ddrecovery]

Have you tried a loader yet? If not you need to find a loader with the same firmware from a donor. The loader direct from the drive will not work.

[sathyan]

Have you tried a loader yet? If not you need to find a loader with the same firmware from a donor. The loader direct from the drive will not work.

Thanks @ ddrecovery....
searching for loader, yet to find a match.(firmware- 0002001P)

[ddrecovery]

Here you go.

Attachments

0002001P.7z

(609.17 KiB) Downloaded 745 times

[sathyan]

Thanks @ ddrecovery...
the loader matched.
able to reach SA and test modules

Heads test:- H (0) and H (1) tests bad
h(2) to H (9) are OK

Reading Modules(composite mode):
The following modules are read with errors
6F
2D
12D
189
190




SA structure test gives
Relo list structure error(3) for both copies 0 and 1

attached the log and SA test report
Backed up the modules and tracks..

any pointers to the next step appreciated
thanks

Attachments

log.log

(154.29 KiB) Downloaded 876 times

[ddrecovery]

H0 and H1 are obviously very weak, but looks like the can still read. Can you get the drive to boot up normally by using the loader and changing the head map in RAM? If not you may need a head swap.

[sathyan]

@ ddrecovery... thanks for your suggestion, will try and get back

[mopakarim]

@ ddrecovery... thanks for your suggestion, will try and get back

Have you tried a loader yet? If not you need to find a loader with the same firmware from a donor. The loader direct from the drive will not work.