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Accidentally started diskpart format on 2TB external drive, lost data


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#1 Hashim1

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Posted 21 July 2017 - 05:10 PM

Hey everyone.

 

I accidentally formatted my external HDD with close to 2TB of data on it, which I obviously have no backups of. Suffice to say, I'm panicking right now, and would appreciate some help recovering as much as of the data as I possibly can - ideally all of it.

 

I was working with diskpart in the command line when I used the command:

format override fs=fat32

...assuming I had selected my 8GB flash drive, and realised I'd accidentally selected my 2TB external drive which had been assigned the same number after reboot (it had been a long night).

 

The format ran for just a minute or so, without progressing to 1%, before I realised what I'd done and did Ctrl+C. The external drive subsequently stopped showing up in My Computer, even after a reboot of my computer, although it was visible in Device Manager. Again in diskpart, I ran the command list volume, selected the raw volume with select volume #, and then did assign to assign it a drive letter. This made it discoverable to Explorer and My Computer, although it then gave the error that it needed to be formatted before it could be used. Clicking on it in My Computer returns the error:

 

H:\ is not accessible

The parameter is incorrect.

 

I then ran the trial ("Simple") version of GetDataBack on the drive, which took around 26 hours to complete before returning at least a hundred different sectors of varying sizes, including large portions of FAT32 and NTFS sectors, as shown below:

 

http://imgur.com/a/c0vRQ

 

The problem is that I'm not sure how GDB works, and I don't want to be limited to selecting just one of these file systems and lose the rest of the data. I'm also still holding out hope that because the format ran for such a relatively short time the partition table may still be intact, and that it's simply a matter of recovering to get my drive back with all original folder structures. After running GDB and leaving it hanging at the stage pictured above, I also tried TestDisk and Recuva. Recuva reported that it couldn't determine the file system. After using it to run an Intel-type filesystem analysis for a few hours, TestDisk found two partitions that it deemed irrecoverable. Here is the log file: https://pastebin.com/gYTUw3VX.

 

Anyone know what else I can try? Is it just that I'm using these tools wrong? If not, are there other tools that will be able to recover the partition table and save me many days of recovering and reorganising terabytes of data using GDB (if GDB even functions that way)?

 

I would really appreciate the help. Thanks.


Edited by Hashim1, 21 July 2017 - 05:23 PM.


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#2 britechguy

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Posted 21 July 2017 - 05:22 PM

Have you tried PhotoRec?  (which is part of TestDisk and can do a more "brute force, low level" recovery attempt).

 

That's the only thing I can suggest at this point, as it has worked well for me in recovering data from drives that were badly damaged.  You may get many duplicates, though, as it will try to reconstruct anything it can reconstruct and this includes the same file that's been moved about over time.


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#3 JohnC_21

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Posted 21 July 2017 - 05:32 PM

If the partition table is still intact there are a couple of ways to recover. 

 

Download Testdisk for Windows 32bit. Do not download the 64bit version even if you have 64bit Windows. Unzip the file to a folder on your desktop and run. When launched select the designation of sdb or it could be sdc. Do not select the Windows letter designation if listed. Do a Quick Search. Highlight any partition found. Press the "P" key. Do you see your files? If not do a deeper search which will take a long time on a 2TB drive. Do not write anything if your files are detected. The priority is to recover your most important files first.

 

http://www.cgsecurity.org/wiki/TestDisk_Download

 

http://www.cgsecurity.org/wiki/TestDisk_Step_By_Step

 

The other is with Partition Wizard but this was deprecated in Version 10. Partition Recovery is only allowed in 9.1.


Edited by JohnC_21, 21 July 2017 - 05:38 PM.


#4 Hashim1

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Posted 21 July 2017 - 05:46 PM

Have you tried PhotoRec?  (which is part of TestDisk and can do a more "brute force, low level" recovery attempt).

 

That's the only thing I can suggest at this point, as it has worked well for me in recovering data from drives that were badly damaged.  You may get many duplicates, though, as it will try to reconstruct anything it can reconstruct and this includes the same file that's been moved about over time.

 

At the moment I'm trying to focus less on file recovery and primarily on recovery of the partition table. As mentioned in the post, close to 2TB of data would take days to recover and reorganised, and if I have no choice I'll probably use GDB for that, but I'm looking for a way to avoid the immense legwork of that. Considering diskpart's format ran for less than a minute, there has to be a better way than starting from scratch as if the entire drive's contents have been deleted.

 

 

If the partition table is still intact there are a couple of ways to recover. 

 

Download Testdisk for Windows 32bit. Do not download the 64bit version even if you have 64bit Windows. Unzip the file to a folder on your desktop and run. When launched select the designation of sdb or it could be sdc. Do not select the Windows letter designation if listed. Do a Quick Search. Highlight any partition found. Press the "P" key. Do you see your files? If not do a deeper search which will take a long time on a 2TB drive. Do not write anything if your files are detected. The priority is to recover your most important files first.

 

http://www.cgsecurity.org/wiki/TestDisk_Download

 

http://www.cgsecurity.org/wiki/TestDisk_Step_By_Step

 

The other is with Partition Wizard but this was deprecated in Version 10. Partition Recovery is only allowed in 9.1.

 

Did you actually read the post?


Edited by Hashim1, 21 July 2017 - 05:47 PM.


#5 JohnC_21

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Posted 21 July 2017 - 05:50 PM

Sorry, I missed the Testdisk part. I assume you ran the Deeper Search?

 

Edit: I forgot to ask. When first running Testdisk did you select Advanced > Boot to check if the Boot Sector was valid? Without a Boot Sector available Testdisk cannot recover the partition table.

 

If you want a paid version that has a good track record of recovering partitions look at Diskinternals Partition Recovery. It will let you scan for free to determine if it can reconstruct the partition table.

 

https://www.diskinternals.com/partition-recovery/


Edited by JohnC_21, 21 July 2017 - 05:55 PM.


#6 Hashim1

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Posted 21 July 2017 - 06:08 PM

Sorry, I missed the Testdisk part. I assume you ran the Deeper Search?

 

Edit: I forgot to ask. When first running Testdisk did you select Advanced > Boot to check if the Boot Sector was valid? Without a Boot Sector available Testdisk cannot recover the partition table.

 

If you want a paid version that has a good track record of recovering partitions look at Diskinternals Partition Recovery. It will let you scan for free to determine if it can reconstruct the partition table.

 

https://www.diskinternals.com/partition-recovery/

 

I didn't.

 

Just did now, and it comes back as bad.

 

It's also recognising the partition table type as FAT16, which I'm pretty sure is wrong.

 

Going right back to the beginning to change the partition table type to "non-partitioned" media, which I figured would be worth a try since the partitions have presumably been lost since the format, and then manually selecting the disk's type as NTFS also shows a bad boot sector.

 

Will rebuilding the boot sector write anything to the disk?


Edited by Hashim1, 21 July 2017 - 06:08 PM.


#7 Hashim1

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Posted 21 July 2017 - 06:15 PM

Decided to leave it on Intel-based, as that's what TestDisk suggested it was. Just used it to inspect the boot sector, it seems it's been completely 0-written. Trying to fix it now.


Edited by Hashim1, 21 July 2017 - 06:21 PM.


#8 JohnC_21

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Posted 21 July 2017 - 06:21 PM

The Advanced Boot windows should list a Backup Boot Sector if the Primary is bad. Are both shown as Bad? It that is the case you can Rebuild a new Boot Sector and try the Quick Search again. In that same window is an option to try and repair the MFT if you can get to a good Boot Sector.

 

Showing FAT 16 doesn't sound good.



#9 Hashim1

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Posted 21 July 2017 - 06:41 PM

The Advanced Boot windows should list a Backup Boot Sector if the Primary is bad. Are both shown as Bad? It that is the case you can Rebuild a new Boot Sector and try the Quick Search again. In that same window is an option to try and repair the MFT if you can get to a good Boot Sector.

 

Showing FAT 16 doesn't sound good.

 

After clicking fix boot sector, it started searching for FAT. It returned "no FAT found" in what was presumably the root directory, and it's currently searching sub-directories. Looking like it's gonna be here a while seeing as it's currently on 8 digits out of 10 (32900000/3907024896). That's a sh**load of sub-directories.


Edited by Hashim1, 21 July 2017 - 07:03 PM.


#10 Hashim1

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Posted 21 July 2017 - 07:21 PM

The Advanced Boot windows should list a Backup Boot Sector if the Primary is bad. Are both shown as Bad? It that is the case you can Rebuild a new Boot Sector and try the Quick Search again. In that same window is an option to try and repair the MFT if you can get to a good Boot Sector.

 

Showing FAT 16 doesn't sound good.

 

Do you have any idea why GetDataBack might be showing so many file systems in that screenshot I linked to? I was always under the impression a HDD could only have 1 filesystem. Having FAT32 in addition to NTFS would make sense because of the accidental format, but I'm confused as to why it's showing sectors like EXT (the largest fragment of all, at over 500 GB) and FAT12.


Edited by Hashim1, 21 July 2017 - 07:52 PM.


#11 JohnC_21

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Posted 21 July 2017 - 07:51 PM

I have no idea why it would show that many file systems, especially it showing FAT12, the oldest Windows file system out there.

  • FAT12: The oldest type of FAT uses a 12-bit binary number to hold the cluster number. A volume formatted using FAT12 can hold a maximum of 4,086 clusters, which is 2^12 minus a few values (to allow for reserved values to be used in the FAT). FAT12 is therefore most suitable for very small volumes, and is used on floppy disks and hard disk partitions smaller than about 16 MB (the latter being rare today.)

Before doing anything I would contact runtime support.



#12 Hashim1

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Posted 21 July 2017 - 07:55 PM

Okay, I've done some detailed digging, including looking into the whole list of filesystems, and I noticed something. Here's the full file sector list from GetDataBack along with sizes. Look at the one highlighted in bold.

 

FAT12 at sector 1,659,517,122, cluster size 1 (1.39 MB) more...
FAT12 at sector 1,692,466,669, cluster size 1 (1.39 MB) more...
FAT12 at sector 1,704,817,747, cluster size 1 (1.39 MB) more...
NTFS at sector 1,714,853,847, cluster size 1 (3.03 MB) more...
FAT12 at sector 1,714,860,055, cluster size 1 (1.39 MB) more...
FAT12 at sector 1,714,862,935, cluster size 1 (1.39 MB) more...
FAT12 at sector 1,728,102,375, cluster size 1 (1.39 MB) more...
NTFS at sector 1,733,019,913, cluster size 1 (3.03 MB) more...
NTFS at sector 1,744,590,097, cluster size 1 (3.03 MB) more...
FAT32 at sector 2,460,006,335, cluster size 8 (7.45 GB) more...
FAT12 at sector 2,961,605,093, cluster size 1 (1.39 MB) more...
FAT12 at sector 2,961,607,974, cluster size 1 (1.39 MB) more...
NTFS at sector 3,015,262,812, cluster size 1 (3.03 MB) more...
NTFS at sector 3,626,949,421, cluster size 8 (100.0 MB) more...
NTFS at sector 63, cluster size 8 (1.82 TB) more...
NTFS at sector 1,154,458,512, cluster size 8 (932 GB) more...
NTFS at sector 1,154,482,905, cluster size 8 (100.0 MB) more...
NTFS at sector 1,154,572,989, cluster size 8 (100.0 MB) more...
NTFS at sector 1,154,590,745, cluster size 8 (100.0 MB) more...
FAT12 at sector 1,154,614,561, cluster size 1 (1.39 MB) more...
NTFS at sector 1,154,687,704, cluster size 8 (100.0 MB) more...
NTFS at sector 1,565,114,204, cluster size 8 (119 GB) more...
NTFS at sector 1,650,918,129, cluster size 8 (119 GB) more...
NTFS at sector 1,654,089,751, cluster size 1 (3.01 MB) more...
FAT12 at sector 1,664,198,094, cluster size 8 (10.1 MB) more...
NTFS at sector 1,666,576,494, cluster size 1 (3.01 MB) more...
NTFS at sector 1,714,348,187, cluster size 1 (3.01 MB) more...
NTFS at sector 1,714,853,846, cluster size 1 (3.01 MB) more...
NTFS at sector 1,730,616,541, cluster size 1 (3.01 MB) more...
NTFS at sector 1,733,019,912, cluster size 1 (3.01 MB) more...
NTFS at sector 1,744,590,096, cluster size 1 (3.01 MB) more...
FAT131 at sector 1,754,952,730, cluster size 2 (0.00B) more...
FAT12 at sector 1,755,922,363, cluster size 8 (10.1 MB) more...
NTFS at sector 1,814,974,299, cluster size 8 (119 GB) more...
NTFS at sector 1,838,207,068, cluster size 1 (3.01 MB) more...
FAT12 at sector 1,838,213,388, cluster size 8 (10.1 MB) more...
FAT131 at sector 1,979,756,064, cluster size 2 (546 GB) more...
FAT32 at sector 2,459,453,949, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,950, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,951, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,952, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,953, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,954, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,955, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,956, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,957, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,958, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,959, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,960, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,961, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,962, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,963, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,964, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,965, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,966, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,967, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,968, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,969, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,970, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,971, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,972, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,973, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,974, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,975, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,976, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,977, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,978, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,979, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,980, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,981, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,982, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,983, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,984, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,985, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,986, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,987, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,988, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,989, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,990, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,991, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,992, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,993, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,994, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,995, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,996, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,997, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,998, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,453,999, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,454,000, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,454,001, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,454,002, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,454,003, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,454,004, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,454,005, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,454,006, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,454,007, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,454,008, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,454,009, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,454,010, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,454,011, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,459,454,012, cluster size 8 (7.45 GB) more...
FAT12 at sector 2,474,398,297, cluster size 1 (1.39 MB) more...
FAT12 at sector 2,474,946,581, cluster size 1 (1.39 MB) more...
FAT32 at sector 2,475,029,135, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,136, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,137, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,138, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,139, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,140, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,141, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,142, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,143, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,144, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,145, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,146, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,147, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,148, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,149, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,150, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,151, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,152, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,153, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,154, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,155, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,156, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,157, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,158, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,159, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,160, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,161, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,162, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,163, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,164, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,165, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,166, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,167, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,168, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,169, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,170, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,171, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,172, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,173, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,174, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,175, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,176, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,177, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,178, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,179, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,180, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,181, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,182, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,183, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,184, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,185, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,186, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,187, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,188, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,189, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,190, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,191, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,192, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,193, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,194, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,195, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,196, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,197, cluster size 16 (14.8 GB) more...
FAT32 at sector 2,475,029,198, cluster size 16 (14.8 GB) more...
FAT12 at sector 2,475,064,535, cluster size 1 (1.39 MB) more...
FAT12 at sector 2,475,098,460, cluster size 1 (1.39 MB) more...
FAT12 at sector 2,475,660,179, cluster size 1 (1.39 MB) more...
FAT12 at sector 2,485,376,893, cluster size 1 (1.39 MB) more...
FAT12 at sector 2,571,547,643, cluster size 1 (1.39 MB) more...
FAT12 at sector 2,572,248,566, cluster size 1 (1.39 MB) more...
FAT12 at sector 2,572,251,726, cluster size 1 (1.39 MB) more...
FAT32 at sector 2,573,353,190, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,191, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,192, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,193, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,194, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,195, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,196, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,197, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,198, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,199, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,200, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,201, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,202, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,203, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,204, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,205, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,206, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,207, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,208, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,209, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,210, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,211, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,212, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,213, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,214, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,215, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,216, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,217, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,218, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,219, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,220, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,221, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,222, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,223, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,224, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,225, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,226, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,227, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,228, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,229, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,230, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,231, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,232, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,233, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,234, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,235, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,236, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,237, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,238, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,239, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,240, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,241, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,242, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,243, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,244, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,245, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,246, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,247, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,248, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,249, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,250, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,251, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,252, cluster size 8 (7.45 GB) more...
FAT32 at sector 2,573,353,253, cluster size 8 (7.45 GB) more...
FAT12 at sector 2,581,705,258, cluster size 1 (1.39 MB) more...
FAT12 at sector 2,689,791,283, cluster size 1 (1.39 MB) more...
FAT12 at sector 2,691,583,439, cluster size 1 (890 KB) more...
FAT12 at sector 2,693,159,142, cluster size 1 (1.39 MB) more...
NTFS at sector 2,814,896,673, cluster size 1 (3.01 MB) more...
NTFS at sector 2,839,995,616, cluster size 8 (127 GB) more...
NTFS at sector 2,866,798,102, cluster size 8 (127 GB) more...
NTFS at sector 2,917,539,642, cluster size 8 (127 GB) more...
NTFS at sector 2,917,961,544, cluster size 8 (127 GB) more...
NTFS at sector 2,955,160,813, cluster size 1 (3.01 MB) more...
NTFS at sector 2,991,099,924, cluster size 8 (437 GB) more...
NTFS at sector 2,992,022,327, cluster size 8 (436 GB) more...
NTFS at sector 2,999,950,864, cluster size 8 (433 GB) more...
NTFS at sector 3,015,262,811, cluster size 1 (3.01 MB) more...
FAT12 at sector 3,015,269,134, cluster size 8 (10.1 MB) more...
NTFS at sector 3,049,504,673, cluster size 1 (3.01 MB) more...
FAT12 at sector 3,049,510,995, cluster size 8 (10.1 MB) more...
NTFS at sector 3,106,174,102, cluster size 8 (127 GB) more...
NTFS at sector 3,106,325,727, cluster size 8 (127 GB) more...
NTFS at sector 3,108,827,244, cluster size 1 (3.01 MB) more...
FAT12 at sector 3,111,966,464, cluster size 1 (1.39 MB) more...
FAT12 at sector 3,113,496,636, cluster size 8 (10.1 MB) more...
NTFS at sector 3,117,903,153, cluster size 8 (127 GB) more...
NTFS at sector 3,118,602,055, cluster size 8 (127 GB) more...
NTFS at sector 3,119,095,249, cluster size 8 (127 GB) more...
NTFS at sector 3,126,820,366, cluster size 8 (127 GB) more...
NTFS at sector 3,132,976,588, cluster size 8 (127 GB) more...
NTFS at sector 3,133,128,213, cluster size 8 (127 GB) more...
NTFS at sector 3,135,896,116, cluster size 1 (3.01 MB) more...
NTFS at sector 3,135,896,118, cluster size 1 (3.03 MB) more...
NTFS at sector 3,135,896,120, cluster size 1 (368 GB) more...
FAT12 at sector 3,138,818,142, cluster size 1 (1.39 MB) more...
NTFS at sector 3,139,962,910, cluster size 8 (127 GB) more...
FAT12 at sector 3,143,298,326, cluster size 8 (10.1 MB) more...
NTFS at sector 3,626,859,337, cluster size 8 (100.0 MB) more...
NTFS at sector 3,626,949,437, cluster size 8 (100 MB) more...
NTFS at sector 3,626,967,177, cluster size 8 (100.0 MB) more...
FAT12 at sector 3,626,990,993, cluster size 1 (1.39 MB) more...
NTFS at sector 3,627,064,136, cluster size 8 (100.0 MB) more...

 

I've no idea why GDB has buried it all the way down there, but that 1.82TB NTFS sector corresponds with about the amount of data I had on the drive. I'm thinking that may be the vast majority of my drive, but that makes me wonder what on Earth the other hundreds of GB correspond to? I'm hesitant to restore to the 1.82 TB filesystem until I'm sure what the others are there for. Some of them are fairly large in and of themselves, like the 500GB Ext and several 400GB NTFSes.


Edited by Hashim1, 21 July 2017 - 08:15 PM.


#13 JohnC_21

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Posted 21 July 2017 - 08:13 PM

I have no idea but the start sector of 63 sounds right. All the others start at a crazy sector number.



#14 Hashim1

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Posted 21 July 2017 - 08:28 PM

I have no idea but the start sector of 63 sounds right. All the others start at a crazy sector number.

 

Started the recovery procedure and GDB mounted it, but the file structure looked nothing like my lost HDD and more like my current one, even though my current one doesn't have a 1.82 TB capacity. There also wasn't 1.82 TB of files in the recovered folders, just a few hundred MB. Something's very odd here. Thinking I'm gonna need to let TestDisk carry on doing its work fixing that boot sector.


Edited by Hashim1, 21 July 2017 - 08:28 PM.


#15 JohnC_21

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Posted 21 July 2017 - 08:37 PM

I would give Diskinternals a try if it's in your budget and Testdisk does not give a result. The scan would let you know what is recovered before purchasing the license.

 

The other programs to consider would be Easeus Data Recovery and Minitools Data Recovery. These would at least let you recover the file/folder structure if they were able to find anything.

 

PhotoRec recovers files in real time and therefore the recovery disk needs to have the capacity to recover all your data. In addition all file names recovered with PhotoRec have generic names but the correct extension. There is no directory structure recovered. Renaming 2TB or less of data would be a daunting task.






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