Moltke wrote:
shifting regions we have access to the service area under the loader.
we need to analyze all modules, not just the 01h. how to do it in wdmarvel I do not know, and better to consult the author
since the ROM module are read without an error (experiment with only one controller) , the block comes from SA
In this situation I think it is helpful to take a backup of Reg 0 and reg 1 because the WD Marvel does not allow you to edit modules from the level SA Editor, or block loading firmware, then access to SA from the level DIR Modules. Understand me?
Spildit wrote:
I would say WD changed something on the ARCO procedure and now you can't start it with WDMarvel, same as when they changed SS so it requires unlocking.
Test with drive from the exact same model.
If it doesn't work then WDMarvel can't run ARCO on those drives. If it does work then the problem is with your specific drive.
Arco procedure can be run on my disk, without unlocking, tests 6A, 6B are going perfectly, while Zone TPI and Head Qual no longer have access to the User Area, based on previous test results and what is revealed DISK_DAM_ERROR on all the heads, the same way ARCO 46 All DISK_DAM_ ERROR on all heads.
Self Test also does not require unlocking.
Spildit wrote:
Frank, he can access SA.
What he can't do is RUN ARCO (calibration that he needs to do prior to self scan).
He is trying to self-scan the drive an he can't but he can read modules ok.
Exacly, but
by the end it is not, when regions SA are original, is accses for SA, all modules from the level DIR can read, write all access from the DIR there is no time when regions are on head 0 and 1 are changed, you must then using editor, which does not have the WD marvel. Understand me?
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the reason (calibrator or selfscan) do not interest me. only the type of lock
370F=FM_ERR_HEADER_II_SIGNATURE_INVALID