Is Diskpart unable to clean bitlocker encrypted Windows 8 to go installations?

Question

Hi all.
I am aware that this is a configuration that not many of you will have, but worth a try...
I am running windows 8.1 enterprise x64 installed on a USB drive as windows to go. The USB drive is a supported one for this configuration, Kingston Data Traveller 32 GB. Also I use bitlocker to encrypt the whole drive and all works very nice.
Lately however, I wanted to restore an image backup to the drive, so I plugged it into another pc running windows 8.1 enterprise.
The imaging software however was not able to write to the drive and told me, it is in use. So I looked at explorer, but it was not even mounted, which is expected behavior with windows 8.1.
To overcome the problem, I tried to clean the drive using diskpart and this is where the question starts: Although diskpart told me that cleaning was successful, the imaging software was still not able to write to the drive! So I said, "damn
it, win8.1, what's wrong? I'll use windows 7 to replay the image to the drive!"
On windows 7 I was flabbergasted after inserting the drive: I was presented a message from bitlocker to go which asked me for the password (which I provided and which worked). I did not get that on 8.1!
Attention, the question is right here:
Why is diskpart unable to clean the drive? Why does it tell me "cleaning was successful" (and I could verify that, partitions were indeed removed) although it is obviously unable to remove the bitlocker info?
So far, my understanding of diskpart's clean command was that it completely resets the drive.
Am I right, or what did I miss? Is diskpart not supported on "windows 8.1 to go"?

Answer 1

I dont think diskpart will remove bitlocker encryption.. To remove encryption you must use decryption method.. If you have forgotten password you have to use bitlocker recovery key
Try try Bitlocker repair tool if the partition is damaged..http://www.microsoft.com/en-us/download/details.aspx?id=17294
"The BitLocker Repair
Tool can assist administrators in recovering data from a corrupted or damaged disk volume that was encrypted with BitLocker."
 Using the BitLocker
Repair Tool to Recover a Drive
http://technet.microsoft.com/en-us/library/ee523219(WS.10).aspx
http://support.microsoft.com/kb/928201
If you have lost your password or recovery key check these 
I
Lost My Bitlocker Recovery Key
http://www.pcandtablet.com/windows-8-errors-and-crashes/279/i-have-lost-my-windows-8-bitlocker-key-now-i-cant-boot-how-can-i-recover-my-data.html
http://windows.microsoft.com/en-us/windows-8/bitlocker-recovery-keys-faq  
Hetti Arachchige V Aravinda | Network & System Administrator (B.Sc, Microsoft Small Business Specialist, MCP, MCTS, MCSA, MCSE,MCITP, CCNA, CEH, MBCS)