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 Post subject: Re: ST1000LM025 conversion
PostPosted: May 10th, 2015, 14:41 
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I misread your earlier post, so my suggestion for a match was based on the wrong MCU part number. However, the reasoning was correct. Please go with the other suggestions.

As for your Youtube uploads, why not post a terminal log?

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 Post subject: Re: ST1000LM025 conversion
PostPosted: May 10th, 2015, 17:43 
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Location: Detroit
I'm currently incapable of producing terminal logs from this drive. That's why I wanted to convert it. If you're referring to my YouTube uploads, those would be from other jobs.
I'm going to check my drive library for the pcb suggested earlier.
Would be nice if I knew which models used that board, that would save a lot of time sorting through the 100 or so seagates 2.5" I got. :cry:

Perhaps they can be filtered by date to narrow the legwork...I.e 2012-2014


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 Post subject: Re: ST1000LM025 conversion
PostPosted: May 10th, 2015, 17:56 
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A spinning Samsung drive should produce a terminal log, unless the latest designs are different from the earlier ones. There are two Tx/Rx test points. You only need to solder 3 wires. Pretty basic stuff.

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 Post subject: Re: ST1000LM025 conversion
PostPosted: May 10th, 2015, 19:51 
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Fzabkar;
I've only ever needed 2 wires for it to work in the past, pins 3&4.
Is your 3rd wire a ground?


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 Post subject: Re: ST1000LM025 conversion
PostPosted: May 10th, 2015, 19:53 
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Some people report random garbled characters until they add the ground wire.

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 Post subject: Re: ST1000LM025 conversion
PostPosted: May 10th, 2015, 20:20 
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Yep, I get those sometimes :)


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 Post subject: Re: ST1000LM025 conversion
PostPosted: May 11th, 2015, 2:00 
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100% true



fzabkar wrote:
Some people report random garbled characters until they add the ground wire.

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 Post subject: Re: ST1000LM025 conversion
PostPosted: May 12th, 2015, 19:53 
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Joined: May 3rd, 2015, 18:16
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Location: Detroit
quote="Spildit"
"Samsung drives doesn't store adaptives on ROM. You just need to match the ROM code version with the Overlay version and it will work,"

Kevin over at PCB Solution stated the following about the Rom chip:
" this is the only chip that holds any unique data on the board"


So someone must be incorrect. I'll test this with a random donor by swapping ROMs to see if they ID. It's so easy to do that it seems silly not to do it every time anyway.


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 Post subject: Re: ST1000LM025 conversion
PostPosted: May 13th, 2015, 2:17 
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Location: UK
Data in ROM on Samsung isn't unique to the drive, unlike WD, Toshiba, most ahitachi and later Seagates.

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 Post subject: Re: ST1000LM025 conversion
PostPosted: May 28th, 2015, 22:01 
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Hi, just reporting back with my finding about the comment below.

"Samsung drives doesn't store adaptives on ROM."

It seems that the PC vendor that recommended the ROM's be swapped was correct at least for that model anyway.
I eventually sourced a PCB and the adaptives did have to be transferred otherwise the drive would not detect.


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 Post subject: Re: ST1000LM025 conversion
PostPosted: May 29th, 2015, 2:31 
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osity wrote:
Hi, just reporting back with my finding about the comment below.

"Samsung drives doesn't store adaptives on ROM."

It seems that the PC vendor that recommended the ROM's be swapped was correct at least for that model anyway.
I eventually sourced a PCB and the adaptives did have to be transferred otherwise the drive would not detect.

What do you understand by the term, "adaptives"?

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 Post subject: Re: ST1000LM025 conversion
PostPosted: May 29th, 2015, 3:15 
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osity wrote:
Hi, just reporting back with my finding about the comment below.

"Samsung drives doesn't store adaptives on ROM."

It seems that the PC vendor that recommended the ROM's be swapped was correct at least for that model anyway.
I eventually sourced a PCB and the adaptives did have to be transferred otherwise the drive would not detect.


Vendor was correct, ROM had to be transferred.

You are wrong, "adaptives" were not transferred. There aren't any in the Samsung ROM.

As Franc suggests, ROM version is NOT the same as "adaptives". You are getting the terminology mixed up.

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 Post subject: Re: ST1000LM025 conversion
PostPosted: May 29th, 2015, 15:15 
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fzabkar: By 'adaptives' I'm referring to G&P lists, LBA, model#, Serial#, some servo details, and any other unique info that is stored on the "ROM" chip pertaining to that particular drive that allow it to come ready. Perhaps I've used the wrong terminology. Is this the case, how do you define the term?
..... I've also not clearly understood why everyone calls is a "ROM" when it can be written to and modified.

Spildit: how are you identifying your ROM version. (visually on a chip?) I'd like to verify your #2 statement on this last recovery I just finished.
I'm not familiar with your #4 statement, I've never needed to do anything with overlays.....sounds interesting.


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 Post subject: Re: ST1000LM025 conversion
PostPosted: May 29th, 2015, 16:14 
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Location: Detroit
Spildit:
ai que caralho! It's not that I doubt you. lol
I just need to see/test everything for my self. :)

I've seen that article before, It doesn't mention the terms 'ROM' or 'adaptives' anywhere.....


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 Post subject: Re: ST1000LM025 conversion
PostPosted: May 29th, 2015, 17:46 
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I don't get to use the words caralho to often in forum posts. :twisted:
...never actually.


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 Post subject: Re: ST1000LM025 conversion
PostPosted: May 29th, 2015, 18:34 
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osity wrote:
fzabkar: By 'adaptives' I'm referring to G&P lists, LBA, model#, Serial#, some servo details, and any other unique info that is stored on the "ROM" chip pertaining to that particular drive that allow it to come ready. Perhaps I've used the wrong terminology. Is this the case, how do you define the term?
..... I've also not clearly understood why everyone calls is a "ROM" when it can be written to and modified.

Spildit: how are you identifying your ROM version. (visually on a chip?) I'd like to verify your #2 statement on this last recovery I just finished.
I'm not familiar with your #4 statement, I've never needed to do anything with overlays.....sounds interesting.

It's a different model, but the only unique section of a SpinPoint F3 ROM is the small FIPS module in the otherwise empty second half of the ROM. As is evident from the following thread (and from an Ace Lab blog), the FIPS section can simply be cleared without affecting the operation of the drive. In fact the OP replaced his drive's damaged FIPS with a FIPS from a different drive and was then able to recover his data.

http://www.hddoracle.com/viewtopic.php? ... fips#p2066

Here are my attempts to understand the structure of Samsung's ROMs and firmware updates:

Analysis of Samsung SpinPoint F3 ROM:
http://www.hddoracle.com/viewtopic.php? ... 681&p=1992

Analysis of Samsung F3 firmware update:
http://www.hddoracle.com/viewtopic.php? ... 679&p=1986

AIUI, Samsung's firmware update replaces the entire first half of the ROM. This means that there cannot be any unique information stored there. This leaves only the second section which is empty apart from the FIPS.

BTW, "ROM" is a misnomer, as you correctly point out. But when in ROMe, do as the ROMans do.

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 Post subject: Re: ST1000LM025 conversion
PostPosted: May 29th, 2015, 21:50 
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fzabkar: that's some deep stuff, you remind me of John Nash from the movie a beautiful mind.
.... so when people refer to ROM they're simply referring to the serial flash memory chip, I figured that much. I thought those WERE the adaptives... What do you understand the term adaptives to be?


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 Post subject: Re: ST1000LM025 conversion
PostPosted: May 30th, 2015, 4:09 
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Joined: August 9th, 2007, 8:40
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Location: United Kingdom
I'm with Guru ...

Good luck to both you and your customer. There is terminal access through a USB PCB.


osity wrote:
I am a full time DR guy. This I how I make my living. I do DR practically every single day and with an excellent success rate (except for DM series).

osity wrote:
The reason for wanting to convert to SATA this whole time is to access it through terminal. There is no terminal access through a USB PCB.



guru wrote:
good luck



Spildit wrote:
osity wrote:

fzabkar:

2. I am a full time DR guy. This I how I make my living. I do DR practically every single day and with an excellent success rate (except for DM series). I only get paid if I recover data. In fact, I recover jobs that labs with over 10 years on me have deemed unrecoverable..(including drives with scratched platters) but thanks for the warning. I know you mean well.



:shock: :shock: :shock:

Wow ! I didn't know you were so good, at least judging from your other posts and PMs...

I don't think that you should reply the way you did to @fzabkar as he was trying to help you out.

:x

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 Post subject: Re: ST1000LM025 conversion
PostPosted: May 30th, 2015, 10:14 
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Location: Detroit
scratchy: Drive was already 100% recovered a few days ago. Conversion board suggested by Mikkip was a perfect match ...after flash chip was transferred.


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 Post subject: Re: ST1000LM025 conversion
PostPosted: February 27th, 2016, 9:43 
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Joined: December 14th, 2013, 17:10
Posts: 210
Location: istanbul
i convert ST1000LM025 to ST1000LM024 with chip transfer.

ST1000LM025 is a direct usb drive.
it has a poor jack. it's very easy to break.


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