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fzabkar
 Post subject: Re: wd800jd-75msa3 reading as XYZ
PostPosted: April 20th, 2013, 5:21 
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Nebojsa_28 wrote:
Hm, it's confusing! Owner said "the pcb has never changed" and "no PCB swap was done at all, drive just started identifing like this"!

If raven4d provides us with the information on the drive's label, then perhaps things will be clearer.

I have a few ideas to try, but I don't know if they will be safe. ISTM that the adaptives in the "original" PCB are close enough to enable SA access, so perhaps they may be good enough for accessing the data area, too. I'm thinking that we could patch them into a compatible ROM.

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Nesa
 Post subject: Re: wd800jd-75msa3 reading as XYZ
PostPosted: April 20th, 2013, 7:36 
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Joined: July 18th, 2011, 5:40
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pcimage wrote:
PCB is NOT original.

SA version is 109K, ROM is 109D


Is there ROM 109D version at all?
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raven4d
 Post subject: Re: wd800jd-75msa3 reading as XYZ
PostPosted: April 20th, 2013, 9:07 
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Joined: August 16th, 2012, 4:57
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thank you all for your ideas .

i did manage to get a match donor , a hot swap made the data accessible , drive is now imaging :)

will keep the drive to test on .
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fzabkar
 Post subject: Re: wd800jd-75msa3 reading as XYZ
PostPosted: April 20th, 2013, 14:46 
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Spildit wrote:
Later on you might want to try to flash some ROMs on the PCB and see if you can get it to work again, as a test.

I have some patched ROMs and MODs that the OP could try.


Attachments:
WD800JD-75MSA3.zip [225.41 KiB]
Downloaded 374 times

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fzabkar
 Post subject: Re: wd800jd-75msa3 reading as XYZ
PostPosted: April 20th, 2013, 14:51 
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Spildit wrote:
Sa access on WD is independent of adaptives. Read Louis thread/experiences about it. Even with wrong adaptives SA can allways be read, and that is why you can place a pcb with wrong adaptives on a ROYL and use wdr to read SA and use those Sa Modules to regen Rom/adaptives.

The OP has stated that the "original" PCB was able to access the SA without special tools. Therefore the PCB's current adaptives are good enough for normal operation, AIUI.

My idea was to cut out MOD 47 from the "original" ROM and patch it into a compatible ROM. Alternatively, I was wondering whether hacking the version number in MOD 0D or MOD 11 would circumvent the "XYZ" problem, but I wasn't sure it would be safe or reversible. Now it appears that the data has been recovered, so experimentation would be OK.

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fzabkar
 Post subject: Re: wd800jd-75msa3 reading as XYZ
PostPosted: April 20th, 2013, 17:05 
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This resource set appears to have a 109K ROM:
http://www.datadonor.net/HD%20Western%2 ... 75MSA3.zip

If you like, I can patch your "original" MOD 47 into the above's ROM.bin.

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pcimage
 Post subject: Re: wd800jd-75msa3 reading as XYZ
PostPosted: April 21st, 2013, 5:05 
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Joined: November 29th, 2006, 10:08
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raven4d wrote:
thank you all for your ideas .

i did manage to get a match donor , a hot swap made the data accessible , drive is now imaging :)

will keep the drive to test on .



Good work. :-)

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fzabkar
 Post subject: Re: wd800jd-75msa3 reading as XYZ
PostPosted: April 21st, 2013, 5:36 
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FWIW, here is a 109K ROM that has been patched with MOD 47 from the 109D ROM.


Attachments:
ROM_109K_hacked_47.zip [125.63 KiB]
Downloaded 468 times

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