Hi,

I have a Seagate Barracuda 7200.12 1 TB ST31000528AS firmware cc49.

This hd was getting an increasing number of reallocate sector count when checking SMART the drive with Crystal Disk Info but I was still using fine (not really smart from me, I know and now I need some files from it). Until yesterday ( that is 2-3 years of using it) the disk after starting normally disappeared from my windows 7 computer. I restarted the computer and it wasn't detected from bios.

The drive spins up and doesn't make any strange noises so I suppose there is no physical damage, as far I can tell.

I decided to use an old computer I have that has a serial port to try I see if I can connect to the drive.

I managed to make a cable with the female pins of an old RS232 cable to connect the serial port to the rs232 port of the hard drive.

I set up the Hyperterminal program with 38400,8,none,1 setting connect the hard drive to power. Disk starts, hyperterminal says its connected and I send the ctr+z command and I get nothing.

I tried swapping the transmit and receive cables but nothing.

I tried connecting the rt and tx cables together to test the seriel port and it works, I can see what I type in the hyperterminal, so the serial port is fine.

Can you help me?

The procedure I'm following is the one from here

I just found out why it's no accessing the drive. The rs232 generates the right form signal but not the right amplitute to TTL values. Thus I would need a rs232 to TTL Converter. Just ordered a USB to rs232 TTL dongle and now I have to wait for it to come.

i hope you know what doing

That procedure applies to a 7200.11 drive. The same procedure will damage your 7200.12 firmware if the non-resident G-list is not empty. Start by obtaining a terminal report, without issuing any commands that write to the drive.

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A backup a day keeps DR away.

What commands can I use to get that report?

There is a lot of info about 7200.11 drives but the info for 7200.12 is very disperse

Not really. First I need too get connected to the drive.

Do you have a better procedure or tutorial for a Seagate 7200.12?

I've got the usb-ttl dongle and connected a cable from the rx connector and to the tx connector from the drive and from tx conector from the dongle to the rx connector of the drive.

I use putty with the settings 38400,8,1,none,none

power up the drive,open putty, connect, press ctrl+z and still nothing.

I read something about shorting the read channels, do I have to do it?

This is the board 100535537 REV A:

http://i.imgur.com/MM170b8.jpg
http://i.imgur.com/WYbs8oD.jpg

connect, open putty and then power up the drive
post the log here

Nothing and know I've got the click of death

I shorted the read channels and this is what I get:

I've got to this, then stops typing commands and I still hear the clicks of death

Also managed to get this. After that it just hangup

Can you show us P-List terminal log by entering command V10 ?
Upload the log on forum as .txt file

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My firmware database:
https://mega.nz/folder/O01DkBRI