All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 55 posts ]  Go to page Previous  1, 2, 3  Next
Author Message
 Post subject: Re: ST1000LM025 conversion
PostPosted: May 10th, 2015, 10:35 
Offline
User avatar

Joined: December 19th, 2006, 8:49
Posts: 9429
Location: Portugal
osity wrote:
The adaptives that were transferred were on the st1000lm25 (source) to the 24 model. Out of curiosity , How did you determine that adaptives are not on the ROM on the 24.


Because it's a Samsung drive. 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, you don't have to worry about adaptives that are exclusive to the drive (like for example on ROYL drives).

http://www.hddoracle.com/viewtopic.php?f=116&t=1085

osity wrote:
If ROM was damaged I don't think it would spin up the source drive, which it does.


Ok, i was thinking that the original (damaged) drive didn't spin at all to start with.

osity wrote:
I have contacted other pros which includes ace labs, and I keep hearing that they've never seen this drive before.


Maybe you should contact someone else then.

_________________
1Q9xrDTzTddUXeJAFRn37aqh1Yr6buDCdw - (Bitcoin Donations)
paypal.me/Spildit - (PayPal Donations)
The HDD Oracle - Platform for OPEN research on Data Recovery.


Top
 Profile  
 
 Post subject: Re: ST1000LM025 conversion
PostPosted: May 10th, 2015, 11:01 
Offline

Joined: May 3rd, 2015, 18:16
Posts: 61
Location: Detroit
Spildit:
It spins up so ROM should be good. https://www.youtube.com/watch?v=to3LRLT5ozY

I'm thinking its firmware related, that's why I'm trying to access terminal.


Top
 Profile  
 
 Post subject: Re: ST1000LM025 conversion
PostPosted: May 10th, 2015, 12:00 
Offline

Joined: May 3rd, 2015, 18:16
Posts: 61
Location: Detroit
Fzabkar: interesting, your search for the ST 1000LM024 brought up a totally different PCB . Here is what the source drive looks like.

I do have the bf41-00354a board you suggested in stock but the MCU does not match source. It's same as the other pcbs I've tried. It won't spin up even with the hda blocked.

Source pcb:


Attachments:
image.jpg
image.jpg [ 1.4 MiB | Viewed 2807 times ]
Top
 Profile  
 
 Post subject: Re: ST1000LM025 conversion
PostPosted: May 10th, 2015, 14:41 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 10503
Location: Australia
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?

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: ST1000LM025 conversion
PostPosted: May 10th, 2015, 17:43 
Offline

Joined: May 3rd, 2015, 18:16
Posts: 61
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


Top
 Profile  
 
 Post subject: Re: ST1000LM025 conversion
PostPosted: May 10th, 2015, 17:56 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 10503
Location: Australia
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.

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: ST1000LM025 conversion
PostPosted: May 10th, 2015, 19:51 
Offline

Joined: May 3rd, 2015, 18:16
Posts: 61
Location: Detroit
Fzabkar;
I've only ever needed 2 wires for it to work in the past, pins 3&4.
Is your 3rd wire a ground?


Top
 Profile  
 
 Post subject: Re: ST1000LM025 conversion
PostPosted: May 10th, 2015, 19:53 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 10503
Location: Australia
Some people report random garbled characters until they add the ground wire.

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: ST1000LM025 conversion
PostPosted: May 10th, 2015, 20:20 
Offline

Joined: May 3rd, 2015, 18:16
Posts: 61
Location: Detroit
Yep, I get those sometimes :)


Top
 Profile  
 
 Post subject: Re: ST1000LM025 conversion
PostPosted: May 11th, 2015, 2:00 
Offline
User avatar

Joined: May 5th, 2004, 20:06
Posts: 2789
Location: England
100% true



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

_________________
All went well until I plugged the drive in.


Top
 Profile  
 
 Post subject: Re: ST1000LM025 conversion
PostPosted: May 12th, 2015, 19:53 
Offline

Joined: May 3rd, 2015, 18:16
Posts: 61
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.


Top
 Profile  
 
 Post subject: Re: ST1000LM025 conversion
PostPosted: May 13th, 2015, 2:17 
Offline

Joined: November 29th, 2006, 10:08
Posts: 7095
Location: UK
Data in ROM on Samsung isn't unique to the drive, unlike WD, Toshiba, most ahitachi and later Seagates.

_________________
PC Image Data Recovery
www.pcimage.co.uk


Top
 Profile  
 
 Post subject: Re: ST1000LM025 conversion
PostPosted: May 13th, 2015, 3:58 
Offline
User avatar

Joined: December 19th, 2006, 8:49
Posts: 9429
Location: Portugal
osity wrote:
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.


Dump the chip and check the dump with hex editor. Do the same with a WD ROYL ROM. See the differences..

_________________
1Q9xrDTzTddUXeJAFRn37aqh1Yr6buDCdw - (Bitcoin Donations)
paypal.me/Spildit - (PayPal Donations)
The HDD Oracle - Platform for OPEN research on Data Recovery.


Top
 Profile  
 
 Post subject: Re: ST1000LM025 conversion
PostPosted: May 28th, 2015, 22:01 
Offline

Joined: May 3rd, 2015, 18:16
Posts: 61
Location: Detroit
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.


Top
 Profile  
 
 Post subject: Re: ST1000LM025 conversion
PostPosted: May 29th, 2015, 2:31 
Offline
User avatar

Joined: September 8th, 2009, 18:21
Posts: 10503
Location: Australia
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"?

_________________
A backup a day keeps DR away.


Top
 Profile  
 
 Post subject: Re: ST1000LM025 conversion
PostPosted: May 29th, 2015, 3:15 
Offline

Joined: November 29th, 2006, 10:08
Posts: 7095
Location: UK
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.

_________________
PC Image Data Recovery
www.pcimage.co.uk


Top
 Profile  
 
 Post subject: Re: ST1000LM025 conversion
PostPosted: May 29th, 2015, 9:39 
Offline
User avatar

Joined: December 19th, 2006, 8:49
Posts: 9429
Location: Portugal
1 - Samsung drives don't have adaptives on ROM.

2 - ROM version on the new PCB must be the same as ROM version on the native PCB, because ROM on pcb must match overlay on platter (MC).

3 - You have to swap ROM chip if ROM version on the new PCB is not the same as ROM version on native PCB. It's not exclusive adaptives that are swaped it's just to match the ROM version without looking for a PCB with the same ROM version as yours.

4 - If you can't find same ROM version and you don't want/can't swap chips you can match ROM with overlay by changing overlay to match ROM instead of matching ROM with overlay :

http://www.hddoracle.com/viewtopic.php?f=116&t=1085

_________________
1Q9xrDTzTddUXeJAFRn37aqh1Yr6buDCdw - (Bitcoin Donations)
paypal.me/Spildit - (PayPal Donations)
The HDD Oracle - Platform for OPEN research on Data Recovery.


Top
 Profile  
 
 Post subject: Re: ST1000LM025 conversion
PostPosted: May 29th, 2015, 15:15 
Offline

Joined: May 3rd, 2015, 18:16
Posts: 61
Location: Detroit
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.


Top
 Profile  
 
 Post subject: Re: ST1000LM025 conversion
PostPosted: May 29th, 2015, 15:20 
Offline
User avatar

Joined: December 19th, 2006, 8:49
Posts: 9429
Location: Portugal
I'm not going to comment any further on this, sorry.

No point on keep trying to explain anything when you doubt what i'm saying and are assuming that a g-list and a p-list would be stored .... on ROM ...

Well, keep on reading and learning.

Regards.

_________________
1Q9xrDTzTddUXeJAFRn37aqh1Yr6buDCdw - (Bitcoin Donations)
paypal.me/Spildit - (PayPal Donations)
The HDD Oracle - Platform for OPEN research on Data Recovery.


Top
 Profile  
 
 Post subject: Re: ST1000LM025 conversion
PostPosted: May 29th, 2015, 15:26 
Offline
User avatar

Joined: December 19th, 2006, 8:49
Posts: 9429
Location: Portugal
Example of firmware modules (MC) on PLATTERS (NOT ON ROM) :

Image

You will be able to see defect list there.

ROM on SAMSUNG doesn't store exclusive adaptives for the drive. Period.

_________________
1Q9xrDTzTddUXeJAFRn37aqh1Yr6buDCdw - (Bitcoin Donations)
paypal.me/Spildit - (PayPal Donations)
The HDD Oracle - Platform for OPEN research on Data Recovery.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 55 posts ]  Go to page Previous  1, 2, 3  Next

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: Bing [Bot], Google [Bot] and 25 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group