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The Solution for Seagate 7200.11 HDDs

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#4776
mcsoba

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really
the other side of the board,,but this a bit erased I can identify.....

VCC = CTS

DCD = Data Carrier Detect = GND

DSR = Data Set Ready = RXD

RI = Ring Indicator = DTR

RTS = Request To Send = TXD

----------------------------------------------------

------------------------------------------------------

From Adapter (TX) to >>> RX (on Seagate)

From Adapter (RX) to >>> TX (on Seagate)

 

I can connect the powersupply PC Direct on HD???

okey???

--------------------------------------------------------

---------------------------------------------------------
I purchased one adapter RS232 to TLL female
waiting for the delivery....

 

I can connect directly the adapter to the PC male??,,or need to use a cable nullmodem???




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#4777
jaclaz

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From Adapter (TX) to >>> RX (on Seagate)
From Adapter (RX) to >>> TX (on Seagate)

AND From Adapter (GND) to >>> GND (on Seagate)
That would be READ-ME-FIRST point #7
http://www.msfn.org/...-read-me-first/
and FGA's #4 and #7:
http://www.msfn.org/...-720011-drives/

 


I can connect the powersupply PC Direct on HD???
okey???

Sure. :)
 

I purchased one adapter RS232 to TLL female
waiting for the delivery....
 
I can connect directly the adapter to the PC male??,,or need to use a cable nullmodem???

The generic idea is that the more links you put into a chain the more probable it is that one of the links is weaker of the other (or if you prefer that something goes wrong).

It is of course "better" if you plug that RS232-to-TTL converter directly in the port of your PC, as you remove a link from the chain, in any case you DO NOT want a null-modem cable (which is crosslinked):
http://en.wikipedia....wiki/Null_modem
you want - in case - a plain RS-232 extension cable.

The general idea is the following, you are using a serial console (or Terminal program) in the OS, so a direct RS-232 to TTL is preferred because the data goes like this:

  1. Serial Port
  2. TTL converter
  3. SHORT piece of cable
  4. Device (your Seagate disk)

 

 

(and back)

 

The above is "better" (or "shorter" if you prefer) than:

 

  1. Serial Port
  2. Serial cable
  3. TTL converter
  4. SHORT piece of cable
  5. Device (your Seagate disk)

(and back)

 

And possibly even better than:

  1. Virtual Serial port (or if you prefer Serial port simulated through a software driver) 
  2. USB port
  3. USB to TTL adapter
  4. SHORT piece of cable
  5. Device (your Segate disk)

(and back)

 

And - to repeat myself - GROUNDING together all devices involved is ALWAYS a good idea.

 

jaclaz

 



#4778
mcsoba

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Tkss ...

 

yes RS-232 extension cable,,i followed this source Wikipedia...
after Christmas I will do missing now TORX6 ...

merry christmas to all
...



#4779
LEX LOOTER

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Thanks to you guys, I just managed to unbrick a ST31000340AS. Your help was invaluable.

I've been using that drive for three years and never even heard of this issue until it happened to me a couple nights ago.

Here are the speedbumps I hit in the process and how I worked around them:

1) Setting up the adapter

I used a Prolific PL2303HXA USB-to-Serial bridge chip. I used an orange wire (3.3v) from a sata power cable to power it up. However, it would NOT work with any kind of grounding. I tried grounding it to the HDD GND pin, no dice. Then I tried to ground it to the black wire from the same power cable. It didn't work until I removed the ground wire altogether.

Also in order to stablish connection with the hard disk, I had to connect TX to TX and RX to RX.

2) Executing the procedure

I was following Carter in Canada's guide, which is very clear and detailed. Everything went really smooth up to the following command:

F3 1>N1

Then he says it MIGHT be necessary to power down the HDD (disconnecting the power cable) and then powering it up again before continuing. He also says that's what he did and it worked for him.

Well, I did NOT power down/up the HDD. Instead I just followed the instruction to get back to the F3 T> prompt and then I entered the command

F3 T>m0,2,2,0,0,0,0,22

and got absolutely NO RESPONSE from the terminal. I waited for two hours and nothing happened. At that point I was really worried because the guide (and several other people) say we should not power down the disk before getting a reply.

But since there was nothing else I could do, I disconnected the power cable anyway and started the whole process again.

This time, I did power-cycle the HDD after the N1 command.

Upon reconnecting the power cable, I used the partition regeneration command as posted by Gradius2:

F3 T>m0,2,2,,,,,22 (no zeroes)

And everything went just fine.

No data was lost and I already updated the firmware. The HDD passed Seatools short generic test and now I'm running the complete test.

Thank you very, very much, y'all!

Edited by LEX LOOTER, 15 January 2015 - 03:16 AM.


#4780
jaclaz

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And everything went just fine.

No data was lost and I already updated the firmware. The HDD passed Seatools short generic test and now I'm running the complete test.

Thank you very, very much, y'all!

Very good. :)

Just to avoid this becoming a myth of some kind the commands:

F3 T>m0,2,2,0,0,0,0,22

and:

F3 T>m0,2,2,,,,,22 (no zeroes)

are EXACTLY the same.

 

With the 0's it is the "explicit" form (and is more readable/easier to type correctly), without it works exactly the same as the 0's are implied.

 

jaclaz 



#4781
jhr

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TLDR: I took the board off and cleaned some minor surface corrosion from a few spots on the hidden side of the board. Most notable was near the pads that power the motor and across some of the surface mount pins.

 

My HDD "died" during operation

BIOS didn't detect, and contrary to what I thought, it wasn't spinning on power up.

 

I read enough to know the instructions in this thread dont target this failure, but I was in denial.

 

I was following Carter's PDF guide and got as far the feedback loop on my "FTDI friend" from Adafruit (USB to TTL) when I finally noticed my HDD wasn't spinning up.

 

I went ahead and took the board off and that's when I noticed some discolored spots that I'm calling corrosion. It was minor and wiped away with my shirt. After that the BIOS began recognizing it again.

 

My guess, the spot near the motor pads was causing too much resistance or the spot near the pins was causing a bridge/short.

 

I created an account to see some pictures, so I figured I'd leave my story and say Thanks!.

 

Thanks to this thread, I learned that I need to update the firmware AND I learned that HDDs have a serial console.

 

Just to keep it going:

READ ME FIRST: http://www.msfn.org/...-read-me-first/

PDF Guide: http://www.msfn.org/...seagate-drives/

 



#4782
jhr

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#4783
_PointMan_

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Hi Guys (and Gals),

 

I've tried skimming and searching through this thread to find the info I need, but 4782 posts on 192 pages makes for a lot of reading!

I am trying to fix my ST31500341AS, which seems to be bricked in BSY state. I am using the FT232BM BL tool I purchased on eBay and following the instructions posted. My problem is that I do not get a prompt in HyperTerminal. Loop back test shows my connection is OK. Any suggestions on what I might be missing?



#4784
_PointMan_

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Anyone?






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