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Recovering data from accidentally formatted Bitlocker encrypted drive when chkdsk fails

Hello all,

I had some data on a 1tb bitlocker encrypted NTFS format drive, which was 100% encrypted at the time of the accident. I accidentally formatted the drive by selecting the wrong drive while using software to create a bootable USB stick out of an ISO. The software (PowerISO) attempted to write over the bitlocker encrypted drive with a Fat32 partition, but displayed an error message.

Afterwards, Windows was able to read a scrambled version of my drive. Everything was a list of symbols, and the drive was almost full (as it is while it encrypts in the first place).

I managed to run windows 8's repair-bde application on the drive, and the process slowly decrypted my data onto another drive. After 100%, it told me to run Chkdsk /f. I did so, and was told "The type of the file system is NTFS. Unable to determine volume version and state. CHKDSK aborted."

Currently, in Window's Disk Management utility the drive reads as RAW. Its status is Healthy.

In Window's shell, the drive displays no side or information - but a letter appears for it. When I click that, it says "Location is not available. G:\ is not accessible. The disk structure is corrupted and unreadable." It then asks me if I want to format the drive.

Where to from hear? Any help is appreciated. It's not the end of the world if this data is lost, as luckily I backed up a lot of what was on this drive, but some material is currently lost and I'd like to get it back.

TL;DR version:
- I accidentally formatted my bitlocker encrypted drive (100% encrypted) via PowerISO
- I ran Repair BDE successfully, but it asked me to run Chkdsk /f which didn't work.
- Windows Disk management reads the drive as RAW. Chkdsk says its NTFS. Shell says its corrupt.
- Is my data lost?

THANKS so much in advance for any and all help
5 answers Last reply Best Answer
More about recovering data accidentally formatted bitlocker encrypted drive chkdsk fails
  1. You mentioned the win8's repair bde app recovered your data to another drive; is that not the data you need?
  2. popatim said:
    You mentioned the win8's repair bde app recovered your data to another drive; is that not the data you need?


    Repair BDE copied the data to a drive where it is still corrupt or inaccessible. It was on this second drive that I ran Chkdsk /f with no luck. So I still can't access my data.
  3. Sorry but you're up the river at this point.
  4. Is that the final answer? Drive still appears as RAW
  5. Best answer
    The whole point of encryption is to prevent exactly what you are trying to do. It's a lost cause. A fully encrypted disk in a locked state presents absolutely no identifiable file system, therefore CHKDSK has nothing to fix. Restore from backup and consider it a lesson learned.
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