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Windows 7: Drive became Unallocated and not having much luck recoverying

19 Jun 2015   #1
Louiscar

Windows 7 ultimate 64bit
 
 
Drive became Unallocated and not having much luck recoverying

Hi,
I've followed other threads on this but can't get to my exact problem so far so hopefully some of you may have some ideas.

The drive is a 1TB WD in an external usb box (currently it's connected internally as I try to recover).
It became unallocated automatically I didn't do anything other than turn the box on yesterday to find the drive missing.

I Have so far done the following:

1) Run Partition Wizard quick scan - no partition found
2) Run Easyus quick scan - no partition found
3) Testdisk deepscan - currently 70% through but nothing is indicated yet

In between the first failures I ran Testdisk file recovery. This found about 9000 files and named them with non-original filenames and no folder structure so it's going to be nightmare to sort out.
So I'm back to trying to recover the partition - I can't understand why it can't find any partition information but can find the data.

It's a bit worrying that the disk became unallocated, I don't think this has ever happened to me in all the time I've had a pc which is a very long time.

Does anyone have an idea what I can try assuming this current deepscan is going to fail - I presume it is since I expect a partition should at least be found early in the scan if it's going to appear at all.

If the worst comes to the worst I can recover some important files and figure out what their filenames should be but as there is a lot of stuff which has more complex folder structures I would have to ignore these as it's just not practical to even try. Best solution would be to get that partition back and then hopefully try to find out if the drive is problematic - that seems to be ok healthwise from my initial tests.

Maybe there are some steps you guys would do that I am not familiar with, anything would help at this stage before I give up and format.


My System SpecsSystem Spec
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19 Jun 2015   #2
GokAy

Windows 7 Ultimate x64 SP1
 
 

Hey there. Jumanji is the guru in data recovery in these forums. I will bet he will ask you the exact model of that external drive as it is possible that model has hardware encryption going on. So, try partition wizard quick scan within the enclosure. If you are patient, run the scan and post screenshot of results here. Don't apply anything.

Also provide a Disk Management screnshot, both internal and attached to enclosure. Disk Management - Post a Screen Capture Image

Screenshots and Files - Upload and Post in Seven Forums
My System SpecsSystem Spec
19 Jun 2015   #3
Louiscar

Windows 7 ultimate 64bit
 
 

Thanks for the reply.

As indicated I have done a quick scan with partition wizard. Nothing turned up so the window where a partition would normally appear remained blank all the way to the end of the scan.

The drive in question: WDC WD1002FAEX-00Z3A0

I am waiting for Testdisk to finish its deepscan so uploading attachements of Diskmanagment and current scan for now.


Attached Thumbnails
Drive became Unallocated and not having much luck recoverying-dmanage.jpg   Drive became Unallocated and not having much luck recoverying-currentscan.jpg  
My System SpecsSystem Spec
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19 Jun 2015   #4
CKWD

Windows 7 Home Premium x64
 
 

Hello Louiscar!

So you are using an internal 3.5'' WD drive in an external enclosure? Is this enclosure a simple USB 3.0 connected or does it use external power too? GokAy, this seems to be a DIY external drive, so encryption is unlikely. But you are right, OP should try all the actions with the drive from within the enclosure.

It is possible that during power ons and offs the partition table became corrupted; usually Partition Wizard is the best case to go. Could you give a bit more detail to what you were doing or what was happening with the drive when this happened?

But most times recovering the partition is a bit too hard and there is the chance that the more you meddle with it, trying to recover the partition, the more this damages the drive and the data may become unrecoverable.

I understand you want to recover the partition out of greater convenience but do firstly transfer as much as you can, since you said there were 9000 files found.

If nothing works, you're left with the option of a professional Data Recovery.

WD Data Recovery partners:
Support Answers

Hope it doesn't have to come to this, though. Post back and good luck!

CK_WD
My System SpecsSystem Spec
19 Jun 2015   #5
Louiscar

Windows 7 ultimate 64bit
 
 

Quote   Quote: Originally Posted by CKWD View Post
Hello Louiscar!

So you are using an internal 3.5'' WD drive in an external enclosure? Is this enclosure a simple USB 3.0 connected or does it use external power too? GokAy, this seems to be a DIY external drive, so encryption is unlikely. But you are right, OP should try all the actions with the drive from within the enclosure.
The external box is a good quality Orico enclosure with it's own power and fan. Not exactly but very close to this (mine is the usb 3.0 version:

ORICO 3529RUS3-BK Tool Free 3.5 inch 2 Bay USB 3.0 SATA Hard Drive RAID Enclosure: Amazon.co.uk: Computers & Accessories

Quote   Quote: Originally Posted by CKWD View Post
It is possible that during power ons and offs the partition table became corrupted; usually Partition Wizard is the best case to go. Could you give a bit more detail to what you were doing or what was happening with the drive when this happened?
It's difficult to say but one day I was doing some intensive operation on the other drive in the box and the heat was building up so I turned off and pulled the drawer for the WD so it wouldn't fire up.

However, I'm not sure this was the point at which it disappeared to tell you the truth. I reconnected when I finished and probably turned the drive off not noticing if it was there or not. I accessed it not so long ago to check some files so it could have been at this point. It was only yesterday when I wanted to back some stuff up to it that I noticed it wasn't there.

Quote   Quote: Originally Posted by CKWD View Post

But most times recovering the partition is a bit too hard and there is the chance that the more you meddle with it, trying to recover the partition, the more this damages the drive and the data may become unrecoverable.

I understand you want to recover the partition out of greater convenience but do firstly transfer as much as you can, since you said there were 9000 files found.
Yes my complete photo collection which doesn't matter as I have this backed up in two other places but it accounts for the large number of files. I am concerned only with a bunch of video seasons I have backed up there - Game of Thrones / Rome etc plus some other bits an pieces which have directory structures. Those may be backed up elsewhere though.



Aha! As I was typing this - Testdisk finished its scan and it appears to have found a partition. As I've not used it before I am not sure of the next step but this looks kind of hopeful!


Attached Thumbnails
Drive became Unallocated and not having much luck recoverying-found.jpg  
My System SpecsSystem Spec
19 Jun 2015   #6
Louiscar

Windows 7 ultimate 64bit
 
 

Edit: Grr! I pressed return to look at the partition then backed out and it went to the analyse screen. Have to start the scan all over. I guess the answer is to press 'write' but if it's better to use another tool please advise - at least the partition shows up on a deepscan which I never did with Partition wizard or Easus. I am not sure what's the best / most reliable tool to use although I understand that you guys here tend to recommend Partition Wizard?

Note: I didn't get a directory listing when I pressed return which is not a good sign:
TestDisk Step By Step - CGSecurity
My System SpecsSystem Spec
19 Jun 2015   #7
CKWD

Windows 7 Home Premium x64
 
 

So it's a double bay drive enclosure? The situation does seem like a big coincidence but a enclosure's issue could have caused the problem.

Yes, this does seem very hopeful, I believe this Step-by-Step should be able to help you:
TestDisk Step By Step - CGSecurity

If not, there are plenty of guides.

Good luck!

CK_WD

EDIT: I pressed Send before I could see you have posted again. On other tools I can't be too helpful considering the position I am in. But the others are. Yes, Partition Wizard is very much advised here.
My System SpecsSystem Spec
19 Jun 2015   #8
Louiscar

Windows 7 ultimate 64bit
 
 

Quote   Quote: Originally Posted by CKWD View Post
So it's a double bay drive enclosure? The situation does seem like a big coincidence but a enclosure's issue could have caused the problem.

Yes, this does seem very hopeful, I believe this Step-by-Step should be able to help you:
TestDisk Step By Step - CGSecurity

EDIT: I pressed Send before I could see you have posted again. On other tools I can't be too helpful considering the position I am in. But the others are. Yes, Partition Wizard is very much advised here.
Yes it is a double. I thought I might have maybe not pulled the drawer out enough or it perhaps got knocked in enough to lightly make contact. Unlikely but I'm clutching at straws right now.

REgarding TestDisk and looking at the screen grab vs article.

I had

* HPFS - NTFS

As per the first line with no other partition listings so I might not be able to recover from this as the article uses the other partitions marked

D HPFS - NTFS

after confirming that folders are listed. If I recover the only listed partition it may not work as I expect. Not sure
My System SpecsSystem Spec
19 Jun 2015   #9
jumanji

Windows 7 Home Premium 32 bit
 
 

NTFS found using backup sector. Block size 4096. How?
Your enclosure seems to have done some funny things.
Please do not give any write command for now.

What other drive do you have in the enclosure? Is it functioning OK?
My System SpecsSystem Spec
19 Jun 2015   #10
Louiscar

Windows 7 ultimate 64bit
 
 

Quote   Quote: Originally Posted by jumanji View Post
NTFS found using backup sector. Block size 4096. How?
Your enclosure seems to have done some funny things.
Please do not give any write command for now.

What other drive do you have in the enclosure? Is it functioning OK?
Hi, thanks for getting back to me.
I have a hitachi 1TB drive and it's working fine at the moment. I haven't really had any problems with this enclosure .... till now.

My second scan is about 42% of the way through. Please let me know if I should cancel this and switch to Partition Wizard or any other tool, otherwise I'll wait for it to get back to the point where it bombed out.

Edit: I see what you mean.
Is this relevant?
cgsecurity.org ? View topic - Filesystem corrupted, partition OK
My System SpecsSystem Spec
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 Drive became Unallocated and not having much luck recoverying




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