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Windows 7: 4TB HDD suddenly RAW

17 May 2017   #31
pshock13

Win 7 Ultimate 64-bit
 
 

Okay a little update. After the full scan had finished, I rebooted my computer. In doing so, during boot it said that drive F should be checked...I allowed it and let it run over night.

4TB HDD suddenly RAW-untitled12.png

On the left, you can see the 4TB is usable. The icon isn't showing but I can get into it. On the right is the root of the F drive. First thing I notice is the locks on the folders. I can open an manipulate everything in them. (I think it's just because the permissions have been completely stripped from the folders.) The second thing I noticed is my Music folder (Which resides on the root of the drive) is missing. And I'm sure there may be other things missing too that I just haven't noticed yet.

4TB HDD suddenly RAW-untitled13.png

Unfortunately PW still only shows half the drive, as did Test disk for /dev/sdc. Running a deep scan using GetDataBack and will also try Recuva for the music folder.

Will update again with results




My System SpecsSystem Spec
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17 May 2017   #32
pshock13

Win 7 Ultimate 64-bit
 
 

Okay, CHKDSK ran but didn't do anything to help. I've formatted the drive and now its only showing 2TB max. how to I get full use of the drive back?
My System SpecsSystem Spec
17 May 2017   #33
jumanji

Windows 7 Home Premium 32 bit
 
 

Did you initialise it as GPT before formatting? Please post a screenshot of how your drive looks in Partition izard. Also let me know the manufacturer and model number of the drive.
My System SpecsSystem Spec
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17 May 2017   #34
pshock13

Win 7 Ultimate 64-bit
 
 

Well, the drive was already GPT before formatting.

However, after taking the drive out of my computer and plugging it into my bare drive bay, it reads at 4TB. I've since partitioned the drive into two partitions. (Do you think that'll help windows deal the fact that it's over 2TB?)
~~~~~~~~~
Okay, I just checked it in PW...and well,, look at this weirdness.
4TB HDD suddenly RAW-untitled.png

But as you can see in windows explorer, the two partitions.
4TB HDD suddenly RAW-untitdled.png

Also the model is WDC_WD40EZRX-00SPEB0. It's a Western Digital Green


My System SpecsSystem Spec
18 May 2017   #35
jumanji

Windows 7 Home Premium 32 bit
 
 

You have disclosed some new information hitherto unknown to me. Either you didn't put it across before or I missed it - most unlikely. You have a dock. Confirm.

A dock has some specifications, how many GB/TB HDD each bay can handle, and the total HDD capacity it can handle. This can create a wraparound problem if you put a larger capacity drive into a bay. For example if each bay can handle 2TB and you put a 4TB drive into it after 2TB of data is written any further data will wraparound and start writing from the beginning overwriting the old data. The dock may also muck up your HDD in many ways. ( Sector 0 , other volume boot records, GPT drive partition header, partition table, and the partition data backups))

OK, now please do this. Connect your 4TB drive as an internal drive. Do a full erase using WD Datalifeguard Diagnostic for Windows. http://support.wdc.com/downloads.aspx?lang=en Essentially you are writing zeros to all sectors and a clean wipe to clear all muck. For a 4TB drive it may take hours. So do it overnight.

Once a full erase is completed, when you reboot you will need to initialise the disk as GPT. Create as many volumes as you would like and format.

As far as the dock is concerned, check its specification and comply with it. Older docks can handle only 2TB HDDs /bay.
My System SpecsSystem Spec
18 May 2017   #36
pshock13

Win 7 Ultimate 64-bit
 
 

Quote:
You have disclosed some new information hitherto unknown to me. Either you didn't put it across before or I missed it - most unlikely. You have a dock. Confirm.
Yes this is new information. But no, its not so much a dock as it is a front loading bay. Basically, I can plug-in HDDs from other computers without having to open computer case every time. I think you have the misconception that I've been using it as a mount point for the HDD...this isn't the case. The HDD has always been an internal HDD ever since I purchased it (yes, it was a desktop drive, but never used as such).

4TB HDD suddenly RAW-gopr0568.jpg

Quote:
...if each bay can handle 2TB and you put a 4TB drive into it after 2TB of data is written any further data will wraparound and start writing from the beginning overwriting the old data.
Again, not the case. I only mounted the 4TB HDD to this bay as it was the easiest way to test another connection (making sure its not my SATA cable or the SATA port on the motherboard that might be causing this problem). As soon as I had it in the bay, it read as 4TB and I turned off the computer and reinstalled it internally...at which point it continued to read as 4TB.

I'll run the zero fill format and see what good it does as far as showing in PW afterward
Looks like that utility doesn't support WD Green.
But I'm pretty sure I can write zeros using PW.


My System SpecsSystem Spec
18 May 2017   #37
jumanji

Windows 7 Home Premium 32 bit
 
 

OK, It is a drive bay built into the case.

You must check the drive properly with Datalifeguard Diagnostic for Windows. It should work with/test all WD drives, no exceptions.. See the WD Green support page here http://support.wdc.com/product.aspx?ID=608. You can download Datalifeguard Diagnostic for Windows from this page also. ( It will be the same v1.31) See the User Guide here Testing a drive for problems using Data Lifeguard Diagnostics for Windows | WD Support
. When run it should enumerate all the WD drives alongwith their capacity. If your 4 TB drive is not enumerated with full capacity shown , God help you. But next to God, contact WD Tech support and discuss with them on what you should do further.

If your 4TB drive is recognised with full capacity, then run the Quick Test, Extended Test and check the results. You should also be able to Full Erase the drive if the Quick Test and extended test pass..
My System SpecsSystem Spec
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 4TB HDD suddenly RAW




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