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Recover Data from External HD

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December 15, 2012 12:00:43 AM

We had as Seagate 3tb external drive stop responding. Took it out of it's case and stuck it in a Cavarly Hard Drive Duplicator. The computer recognizes the drive but wants to reformat it.

Went to disk management and saw this, it's drive D:
http://img811.imageshack.us/img811/8742/hd3tb.jpg

This drive was only one partition.

Anything I can do to restore the data?

Help appreciated!

More about : recover data external

a c 288 G Storage
December 15, 2012 3:52:42 AM

The USB-SATA bridge firmware in Seagate's 3TB GoFlex externals is configured with 4KB LBAs. This is to allow them to be compatible with Windows XP. If you remove the drive from its enclosure and attach it directly to a SATA port on your computer's motherboard, then you will be exposing the drive's 512e LBAs. Sector 0, where the partition table resides, will still be in the same place, but every other sector location will be out by a factor of 8.

The actual capacity is ...

349.31 x 8 = 2794.48 GB

In short, you need to reinstall the drive in its enclosure, or find another enclosure that defaults to a 4096-byte sector size.
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December 22, 2012 3:27:16 AM

I keep getting this message which I guess refers to fzabkar's response:

"The request could not be performed because of an I/O device error."

Tried reformatting and nothing but this. I'll give it a shot tomorrow in the original case.
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December 31, 2012 4:05:02 AM

I got the drive back in it's case. Disk Management see's it but everytime I try to initialize the drive it says the same thing.

"The request could not be performed because of an I/O device error."

Any ideas?
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a c 288 G Storage
December 31, 2012 6:07:15 PM

"Initialisation" is data destructive. It deletes the entries in the partition table.

That said, the error message is implying that Disk Management is unable to write to sector 0. Is Disk Management now reporting the correct size for the physical drive? Does it detect an existing 3TB NTFS partition?

Can you access the drive using a disc editor?

HxD - Freeware Hex Editor and Disk Editor:
http://mh-nexus.de/en/hxd

DMDE (DM Disk Editor and Data Recovery):
http://softdm.com/download.html
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a b G Storage
January 1, 2013 3:42:29 PM

use fzabkar answer
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a c 288 G Storage
January 4, 2013 5:53:09 PM

The fact that you can access sector 0 when the drive is outside the case but not when it is inside would suggest that there is something wrong with the case, or perhaps there is some kind of security issue (password, write protection, access rights).

Disk Management appears to be correctly detecting the drive behind the USB-SATA bridge board inside the enclosure.

How does HD Sentinel see the drive?
http://www.hdsentinel.com/
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March 4, 2014 12:01:17 AM

Data Recovery is capable to scan and get your data back from virtually all storage drives, such as most external storage media like digital cameras, USB drives, Kindles, iPods and SD cards and internal hard drives. In addition, it is capable to even scan your drive when it is inaccessible, failed or when partition is lost. With having a lot of powerful algorithms for scanning, Data Recovery can recover data from external hard drive completely for your Mac OS X.Your hard disk partition might be lost if you suddenly lose the ability to retrieve and mount files. Data Recovery has certain features that can help you repair and recover missing partitions and get your data back.
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March 27, 2014 6:37:17 AM

As a matter of fact, you can restore your lost data by recovery tool. 4Card Recovery is a good one and you can download it for free. Have a try.
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