I have a new Win 8 designed laptop with UEFI that I put in a Crucial M500 480 GB SED (Self Encrypting Drive) that is Opal 2 spec and meets IEEE spec. to be an "eDrive" for Windows 8.
I installed Win 8 Pro on my new SSD SED (has encryption in hard drive chips that once turned on does all encryption at hardware level).
I then turned on BitLocker on C: and D: (each 225 approx. on the physical hard drive) and encrypted both. It took about 10 to 15 minutes to complete the BitLocker encryption process doing this.
What I need to know is: Did the BitLocker take control of the SSD SED Drive and is using the hardware encryption built in to the hard drive hardware or is BitLocker still being done in Software like in older hard drives that do not are not SED (eDrives).
I can not locate any status that tells me how BitLocker is doing the encryption. If it is being done in software (like old ways) than that is slower etc. and defeats the purpose of having an SED (eDrive) for the SSD.
I contacted Crucial tech support for their Crucial M500 480 GB drive and they said it sounded like it was using the hardware since it only took about 10 to 15 minutes to encrypt the C and D partitions but since I have a high end i7 with SSD it still may have not taken ownership of the drive and is just doing in software for the BitLocker encryption. They said they did not know how to tell if BitLocker was using hardware or just doing software.
I am sure there must be a way to tell from some system status.
Any help or ideas?? I need to know this.
I did more tests and found that no matter what I did with my laptop (no TPM) I could not get the BitLocker to use the Crucial M500 SED (eDrive) hardware encryption and only BitLocker Software encryption on my OS (C:) drive.
However, my Data partition (D: in my case) used hardware encryption when I enabled BitLocker on that volume.
After much investigation, I got an answer from a Microsoft Partner forum that you must have a TPM chip to be able to use the hardware encryption on the OS drive. I let them know they do not have enough/any doc. on this that I could find and given by 2015 almost all SSD drives will be SEDs they should have that doc.. They agreed...
Here is the command I used for status and various other options.
> manage-bde -status c:
I ran that command on my Win 8.1 Pro ASUS UEFI laptop with the Crucial M500 480 GB that had BitLocker turned on and got output for both C and D volumes (both on Crucial M500 480 GB) of:
Volume C: 
Size: 223.86 GB
BitLocker Ver 2.0
Coversion: Fully Encrypted
Percentge Encrypted: 100%
Encryption Method: AES 128
Protection Status: Protection On
Lock Status: Unlocked
Identification field: Unknown
From above, I am certain now the encryption is being done in software on my Crucal M500 480 GB since I know your drive does AES 256 etc and above is all BitLocker Software encryption I believe.