I posted in another forum and was referred to here.

First, I already know that I should have made a backup first, and I will do so in the future.  I also have researched, and I am probably SOL.  Lesson learned.  Please no lectures.

I was encrypting an external HDD with bitlocker and got a BSOD.  The drive is no longer accessible.  I am attempting to use repair-bde.

my repair-bde command is:

repair-bde H: E: -pw -F

H: is the encrypted drive
E: is the target drive

Both drives are 4TB

I keep getting the message:

LOGERROR: 0xc0000031
Failed to open E: . (0x80070020)

Any help is appreciated.

Thanks!

GB

Have you tried putting the drives in brackets as shown?  I do not use BL so cannot test it

repair-bde <InputVolume> <OutputVolumeorImage> [-rk] [rp] [-pw] [kp] [lf] [-f] [{-?|/?}]

Hi,

This problem occurs due to an encryption failure, since you are facing this issue , I'd suggest you perform the following in the order of appearance and check if the issue persists. If it doesnt work, I am afraid your best bet would be data recovery specialists.

Method 1:

a. Open a command prompt on your computer (Click Start, type "cmd" in the search box)

b. Type: manage-bde -status <drive letter> eg. manage-bde -status e:

This should let you verify the drive is unlocked and encrypted

c. Now type "manage-bde -off <drive letter>" eg  manage-bde -off f:

This tells Windows to turn off encryption on that drive and decrypt it.

Be patient, decryption time can take a very long time, 12hours per 1.5Tb

Method 2:

Use the BitLocker Repair Tool to Recover a Drive

http://technet.microsoft.com/en-us/library/ee523219%28WS.10%29.aspx

Regards,

D. Wu