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FYI: Self Encrypting Drives must be uninitialized for BitLocker Hardware encryption

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Got myself a new 1TB Crucial MX200 SSD today. This is a Self Encrypting Drive like my other SSDs. When I tried enabling BitLocker on it as I usually do, I noticed that it was asking me about how to encrypt the drive and taking more time with the encryption than I have seen in the past with SED drives that support the TCG OPAL standard. 

Not good if you get this screen!

Not good if you get this screen!

Something was not right. So I went back to Microsoft’s page on BitLocker and SEDs and noticed that one of the requirements was that the drive must be uninitialized! Damn! In the past I usually enable encryption and then copy over data, but today I had copied the data first (thus initializing the drive and creating partitions) and then I was trying toe enable encryption. Obliviously that was a no-go so I had to copy the data out of the drive, uninitialize it, and then turn on BitLocker encryption. 

Uninitializing is easy via diskpart

DISKPART> list disk

  Disk ###  Status         Size     Free     Dyn  Gpt
  --------  -------------  -------  -------  ---  ---
  Disk 0    Online          447 GB  1024 KB        *
  Disk 1    Online          931 GB  1024 KB        * <--- this is my SED
  Disk 2    Online          119 GB      0 B
  Disk 3    Online          931 GB      0 B        *
  Disk 4    Online          465 GB  1024 KB

DISKPART> select disk 1

Disk 1 is now the selected disk.

DISKPART> list partition

  Partition ###  Type              Size     Offset
  -------------  ----------------  -------  -------
  Partition 1    Reserved           128 MB    17 KB
  Partition 2    Primary            400 GB   129 MB
  Partition 3    Primary            531 GB   400 GB

DISKPART> clean

DiskPart succeeded in cleaning the disk.

DISKPART> list partition

There are no partitions on this disk to show.

DISKPART> exit

Leaving DiskPart...

Now Disk Management will show the disk as uninitialized. 

uninit

Create partitions as usual but before writing any data to the disk turn on BitLocker encryption. This time it will be a one-second operation and you won’t get a prompt like above. 

To confirm that the drive is hardware encrypted (in case you wonder whether BitLocker didn’t just zip through coz the drive had no data on it) use the manage-bde command:

C:\>manage-bde -status
BitLocker Drive Encryption: Configuration Tool version 6.3.9600
Copyright (C) 2013 Microsoft Corporation. All rights reserved.

Disk volumes that can be protected with
BitLocker Drive Encryption:

Volume D: [DATA]
[Data Volume]

    Size:                 450.00 GB
    BitLocker Version:    2.0
    Conversion Status:    Fully Encrypted
    Percentage Encrypted: 100.0%
    Encryption Method:    Hardware Encryption - 2.16.840.1.101.3.4.1.42
    Protection Status:    Protection On
    Lock Status:          Unlocked
    Identification Field: Unknown
    Automatic Unlock:     Enabled
    Key Protectors:
        Password
        Numerical Password
        External Key (Required for automatic unlock)

As you can see the drive is hardware encrypted. 


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