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External Hard Disk ... not accessible

Hi, I've 2 external hard disks (HDs) and got a lot of important data in there, due to shifting, had disconnected from the my desktop for some time, now when tried to connect and access them, not accessible and readable.

Please assist/advise/guide ... what are my options and how to recover this data.

Thanks in advance.

Regards
MK
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Mushfique Khan
Asked:
Mushfique Khan
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10 Solutions
 
Scott CSenior Systems EnginerCommented:
What message(s) are you getting?  Is it saying anything like "invalid format"?

Can you hear the drives spinning up?   Whatever you do, DO NOT open the drive housings themselves.  

Try booting with a live distro of Knoppix, connect the drive and see if you can see the data.

http://knopper.net/knoppix/index-en.html

If you suspect the housing is bad, you can try removing the drive from the plastic housing and directly connecting it to a machine.  I'd do this after almost all other options are exhausted.

Another thing to try is contact a data recovery center.  They will charge a good bit, but if the data is important....Most will only charge if data is recovered.

It's strange that both are having the same issue. Were they both stored in a location where they could have been exposed to high EM or magnetic fields?  If so, then the data is most likely gone for good.

I take it no backups?
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Dr. KlahnPrincipal Software EngineerCommented:
Does the same problem persist if they are attached to a different system?
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LuckySystem EngineerCommented:
I have went through a ton of those over the years . seems once they go bad they are done!
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EirmanChief Operations ManagerCommented:
It's strange that they both failed - were they badly handled?

Try Testdisk
It's free and well worth trying - I has worked for me.

Quote from the site ....
TestDisk is powerful free data recovery software!
It was primarily designed to help recover lost partitions and/or make non-booting disks bootable again
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LuckySystem EngineerCommented:
I'll try that as well sound good,,, thanks E
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noxchoGlobal Support CoordinatorCommented:
First of all you need to tell us if the drive is shown in Windows Disk Management and if yes with which status.
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nobusCommented:
when you connect them -  do you het the notificatioin sound?
and what disk models are this?  dothey have their own power supply?  if so - connect the power supply, and check the voltage also
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Mack JohnData Scientist Commented:
Getting this type of error, irritates us very much. You can fix this issue by performing some steps. Just use the appropriate method.
You can use the chk disk command on command prompt.
Try to fix this issue using disk management.
Very first try another system, sometimes due to hardware failure, it might occur.

But in my case, these things did not help me. Then I used a software recovered complete data. You can try this software if the problem persists. But remember one thing fist download the free hard drive recovery demo version and then go to invest for it.
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Gerald ConnollyCommented:
1) Do they show under Windows Disk Manager
2) If Not do they show up if connected to another system
3) remove the drive from the caddy and connect directly to a system using the drives native interface

If its not visible after these steps use Professional Data Recovery such as OnTrack and hope they can recover some of your data, otherwise you will need to resort to your backups (You do have Backups?)
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Mushfique KhanDirector OperationsAuthor Commented:
no backups :(

windows is identifying these HDs ... what to do, how to make them identify first and then only I can run any diagnostics ... right?
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Mushfique KhanDirector OperationsAuthor Commented:
windows is NOT identifying these HDs ... what to do, how to make them identify first and then only I can run any diagnostics ... right?
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rindiCommented:
Do you mean windows explorer can't see the disk, or Windows diskmanagement? Can the BIOS see the disk? If not, the disk is either ready for recycling, or you can send it to a professional recovery agency like Gillware:

https://www.gillware.com/

But the price won't be low. So generally, as there was no backup, the data couldn't have been of any importance, and so it won't be worth the price to pay for recovery.
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noxchoGlobal Support CoordinatorCommented:
Connect the drives, go to Windows Disk Management and take a screen shot of it. Load it here.
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nobusCommented:
as said - first check in disk management - it may simply be missing a drive letter
if it is missing, just give it a letter
plse answer my questions :
when you connect them -  do you het the notification sound?
 and what disk models are this?  
dothey have their own power supply?  if so - connect the power supply, and check the voltage also
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Mushfique KhanDirector OperationsAuthor Commented:
yes nobus ... have tried all the options, both of these HDs have their own power supply, first connected in the same extension as the computer, but then plugin to the dedicated main power, but still ... only sound is coming, after connecting the laptop or even desktop, no notification on the computer screen.

but sound is coming from the HDs :(
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nobusCommented:
>>  first connected in the same extension as the computer  <<  you mean the sam AC outlet?

>>>  but sound is coming from the HDs :(    <<<   can you record it?

you can also test the disk drives on a known working PC
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Gerald ConnollyCommented:
Lots of useful advice - autoclosed
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