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(Urgent) Hard disk cannot be detected

Last response: in Storage
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September 26, 2013 3:21:22 PM

I have a seagate 500gb hard disk(ST3500320AS) with data inside. Few days ago I plugged it into an external hard drive docking station and connected to my PC but it cannot be detected.
At first, in "Computer" I could see the drive but it prompted that the hard disk needs to be formatted in order to access. Then I discovered that the surface of the hard disk was full of dust so I cleared it up with a cotton shirt randomly.
After that, when I connected it to the PC again, I couldn't see the hard disk anymore in "Computer". After that, I tried several methods below:

1) Computer>Manage>Disk Management
"Disk 4"(which belongs to my 500gb hard disk) was detected. Anyway, it required to initialize the disk in order to access. I tried both "MBR" and "GPT" options but none of them success (message prompt: "Incorrect function")

2) diskpart
DISKPART> select disk 4
DISKPART> detail disk

The command prompt stopped working after "detail disk" is entered

3) Software (Partition Find and Mount)
A drive name (ST350032 0AS USB Device) is shown but the size is shown 0kb, nothing could be further processed.

It would be very much appreciated if someone could give me some solutions as the data inside the hard disk is important.

Thanks.

Best solution

a c 283 G Storage
September 27, 2013 5:05:41 AM

With the drive connected to a USB port, test it with Seagate's diagnostic Windows software:
http://www.seagate.com/support/downloads/item/seatools-...

If the test says the drive has failed, the only way to rescue any data from it in such cases is to send it to a data recovery specialist which is unfortunately very expensive, hence it is very unwise to save valuable data on only one hard drive with no backups.
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September 27, 2013 8:31:22 AM

Phillip Corcoran said:
With the drive connected to a USB port, test it with Seagate's diagnostic Windows software:
http://www.seagate.com/support/downloads/item/seatools-...

If the test says the drive has failed, the only way to rescue any data from it in such cases is to send it to a data recovery specialist which is unfortunately very expensive, hence it is very unwise to save valuable data on only one hard drive with no backups.


Thanks Phillip. The software is capable to recognize the hard disk but the test said it has failed. After surfing the internet, I found there's a solution to fix the problem by replacing the PCB board of the hard disk. Although i m not 100% sure the PCB board of the hard disk is the problem, it seems that my hard disk has some symptoms of PCB failure according to http://www.hdd-parts.com/take-photos.html and http://www.youtube.com/watch?v=nlaHVNMR8Xw

Do you think it's a viable solution? Thanks.
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a c 283 G Storage
September 30, 2013 4:35:52 AM

Replacing the PCB that handles the SATA-to-USB conversion (if indeed it's that PCB that's faulty) should fix the problem but I have never had to go down that route because all my data is cloned on three separate ext. drives, so I just replace a drive when one fails, no data lost.
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