External usb hdd shows as "unallocated"

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david_1

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Jun 22, 2014
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Hello, i was going to use hdd regenerator on my external 2tb hdd, but then it gave me an error and now the disc shows as unallocated....

The hdd has no partitions in it,i have tried some programs to "retrieve" partitions but they dont detect anything. Also tried some programs to retrieve stored data and they seem to work, they detect the data etc but it would be a titanic task .

My question is , there is a way to make my hdd detectable again? if i use any partition program and create a new partition of 2tb(max disk capacity, as it was before), would it delete the data on it?

Please help i have almost full 2tb with photos and important things, any help is much apreciated.
 
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david_1

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Jun 22, 2014
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Mini tool power data recovery detected the partition and im able to see the files, but hdd still wont show as detectable, creating a partition of 2tb will delete any information on the hdd?
 
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TyrOd

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Aug 16, 2013
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This is not a logical failure that you can safely recover from yourself. If a hard drive is showing as raw/unallocated and standard software recovery tools cannot recover the data, then the read/write heads are weak or failing and/or you have bad sectors(defects) preventing the drive from accessing file system information.
Any reformat is unlikely to work and WILL make it worse anyway due to overwriting file system information and possibly causing unrecoverable data loss from a head crash.

There are of course professional imaging tools that can deal with weak heads and physical sector damage, but no software by itself will help you without a much higher risk of unrecoverable data loss.

 
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TyrOd

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Aug 16, 2013
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I"m not sure what pointing to that thread on HDDGURU is meant to imply, but it's obvious that no software like DDRescue or HDD Regenerator or Spinrite can recover data from bad sectors/failing heads on it's own.

That's clearly common knowledge on HDDGURU and the consensus on the thread you linked.
You need a combination of hardware/software tools.

Of course there's it's not 100% that it's bad sectors that is the problem here and it could be only logical corruption.

Obviously if a sector by sector imaging process with software only tools is slow or hangs up, you should terminate it because you can easily cause more damage.
 
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fzabkar

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Sep 22, 2010
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TyrOd

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Aug 16, 2013
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I agree. Solid information.
 
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