Data recovery and disk repair questions and discussions related to old-fashioned SATA, SAS, SCSI, IDE, MFM hard drives - any type of storage device that has moving parts
November 28th, 2017, 6:29
Hi,
I have problems with my Seagate 7200.14.
BIOS does not recognize this drive.
So I want to connect to it via TTL interface.
I bought a 5-pin USB to TTL converter like this:
Cables are connected as follows:
TTL GND > HDD GND
TTL TXD > HDD RXD
TTL RXD > HDD TXD
After connecting with RealTerm and plugging in the power of the PCB I can see outputs:
Spin Up
Trans.
Spin Up
SpinOK
(P) SATA Reset
But if I type CTRL+Z nothing happens.
What could be the problem?
Is it right that the Seagate 7200.14 has a 1.8v TTL interface.
Do I have to modify my TTL converter?
November 28th, 2017, 15:50
Unit's in bsy state. you probably need to gain access by short-circuiting the read channel.
My question is........ and then what??
Take Your Hard Drive to a Data Recovery Professional, it's not a series that allows many experiments.......
November 29th, 2017, 13:37
Can anyone tell me how to short the read channel on this 7200.14? I can't find any information. Only for other drives.
November 29th, 2017, 16:23
December 1st, 2017, 3:35
I compared the images of this link with my PCB, but I can't find out where the read and write channel could be.
Here ist my PCB:
December 1st, 2017, 5:33
I think this side is more important:
December 2nd, 2017, 7:20
What is your goal, to rescue data or repair your drive?
December 3rd, 2017, 2:24
power on drive and wait for few minutes 10-20 minutes then try Ctrl+Z you will get terminal access.
December 3rd, 2017, 5:45
colanco wrote:Unit's in bsy state. you probably need to gain access by short-circuiting the read channel.
My question is........ and then what??
Take Your Hard Drive to a Data Recovery Professional, it's not a series that allows many experiments.......
I agree.
This series is famous for all the wrong reasons.
The short points are the ones up and to the left of the second screw hole (counting from left to right and to the lower part on your second pic) -- sorry I'm on the move and can't mark them on your picture. They are either 15+16 or 17+18.
But, then what?
As colanco said, if data is important, you'd better see a pro.
December 4th, 2017, 8:54
I have a backup of 2016.
But on this disk are some pictures from 2017 that I want to recover.
I just want to get this disk recognized by BIOS again and then try my luck with PhotoRec.
December 4th, 2017, 18:27
After connecting the USB-TTL-converter and plugging in the SATA power cable I get the following output:
Even after waiting 20 min and pressing Ctrl+Z I don't get terminal access.
January 20th, 2018, 16:30
timing is very important.
plug the power after the one second press ctrl+z...
or 2 second...
try many times...
no need to long wait..
January 21st, 2018, 5:01
Well,
From Your Terminal i can see that you need to short read channel as soon as the trans message comes before the second spinOK And then keep pressing CTRL+Z .Timing is Imp,But Pro Tools Have a Way of dealing with this
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