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Windows 7: 4TB HDD suddenly RAW

13 May 2017   #11
pshock13

Win 7 Ultimate 64-bit
 
 

Installed 9.1 ...I no longer have the option the change partition type ID ... on that drive.
I have the option to change the other drives
Attached is a screenshot of the 9.1 interface.
4TB HDD suddenly RAW-untitled6.png




My System SpecsSystem Spec
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13 May 2017   #12
jumanji

Windows 7 Home Premium 32 bit
 
 

OK, I tried both PW 9.1 and 10. When the disk is GPT it does not allow partition Type ID change.

Let us see what TestDisk finds. Make sure you have installed TestDisk 7.0

My post #13 here External HD - Partition Unallocated

Follow the process outlined in my post #19 there with appropriate changes mentioned below.

1. In Screen 2, select your 4TB internal disk. Does your 4TB disk show as 4TB ? Post a screenshot.

2. In screen 3 Select [EFI GPT] since your disk is GPT

3. In screen 4, when you select [Advanced] and press Enter what is the next screen that appears? Post a screenshot.

TestDisk is highly interactive and so I cannot predict and we have to make an appropriate decision based on what the screen shows.
My System SpecsSystem Spec
13 May 2017   #13
pshock13

Win 7 Ultimate 64-bit
 
 

Okay so a little hung up here....
4TB HDD suddenly RAW-untitled7.png
/dev/sdc and Drive F: are physically the same drive. Though the first shows only half capacity while the second shows 4TB.

Which do I chose? Or maybe more so, why is it displaying like that?


My System SpecsSystem Spec
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13 May 2017   #14
jumanji

Windows 7 Home Premium 32 bit
 
 

Things do not look any better.

Select/Highlight Drive F: [Proceed] is highlighted. Press Enter
[None] - Press Enter
[Advanced] - Press Enter.Post the next screen.
My System SpecsSystem Spec
13 May 2017   #15
pshock13

Win 7 Ultimate 64-bit
 
 

That's not something I like to hear.

4TB HDD suddenly RAW-untitled8.png


My System SpecsSystem Spec
13 May 2017   #16
jumanji

Windows 7 Home Premium 32 bit
 
 

hmmm............. that is the best it can do. You can change the file type to NTFS and then it can list all the files in the disk for you to recover. The change however is not written to the disk.

How to make it stick is a million dollar question for which I have no answer. So no million dollars.
My System SpecsSystem Spec
13 May 2017   #17
pshock13

Win 7 Ultimate 64-bit
 
 

Even after changing the type, I wasn't able to list the files as it says the file system seems to be damaged.
Looks like I'll just reformat and start over.
I was able to salvage some stuff using GetDataBack, but I can't really tell how much I got back cause they are all in these folders named like [0215E1] random numbers and letters. So I have some reorganizing and some reinstalling to do.

Would you recommend, after I reformat, to partition my 4TB into two partitions? Would windows better be able to handle it that way?
My System SpecsSystem Spec
13 May 2017   #18
jumanji

Windows 7 Home Premium 32 bit
 
 

Since you have decided to format the drive, I would recommend that you run checkdisk as in my post #6 and see whether it is able to rectify the file system.

I am now veering around to think that your HDD has developed a physical fault ( bad sectors at crucial points ) damaging the filesystem and that which cannot be undone.

If checkdisk does not correct the filesystem, then you should run the HDD manufacturer's diagnostic/repair utility and check its health. That should determine whether you can format and use the HDD or jettison it.
My System SpecsSystem Spec
13 May 2017   #19
pshock13

Win 7 Ultimate 64-bit
 
 

I'm not currently home to test this, but correct me if I'm wrong... Chkdsk won't run on a drive that is RAW.
My System SpecsSystem Spec
13 May 2017   #20
jumanji

Windows 7 Home Premium 32 bit
 
 

Quote   Quote: Originally Posted by pshock13 View Post
........but correct me if I'm wrong... Chkdsk won't run on a drive that is RAW.
Generally yes. But there are exceptions. Check this thread External hard drive visible in Partition Magic but not explorer OP: nexus87

If checkdisk does not want to run it will immediately notify that it cannot run on a RAW drive.No damage will be done to the data.

But if it starts running without a murmur it will run. If it completes successfully your drive will be restored as in the OP's case. But if it aborts midway unable to correct any errors - beyond its capability - that is it. You have uncorrectable filesystem errors. And that can happen if the HDD is physically damaged - bad sectors. The problem is when it aborts midway, it will leave all recoverable good data in shambles. If you attempt data recovery thereafter you will get mostly corrupted data.

Since you had decided to format the drive ( having recovered whatever you can with GetDataBack and we have not been successful any better) you can take a chance now running checkdisk.

( In that OP's case, I found that everything was OK, the volume boot sector, the MFT, So we decided to run checkdisk as a last resort and it worked.)
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 4TB HDD suddenly RAW




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