I have a Lenovo E540 with TPM and Crucial M500.
This laptop is booting using UEFI and the drive supports eDrive operation.
When I try and enable Bitlocker it will only enable as software based encryption. If I try and force hardware from the command line:
Enable-BitLocker -MountPoint c: -TPMProtector -HardwareEncryption
I get an error:
Set-BitLockerVolumeInternal : The drive specified does not support hardware-based encryption. (Exception from HRESULT: 0x803100B2)
The event log shows the same.
I have verified the Crucial requirements for eDrive here: http://forum.crucial.com/t5/Solid-State-Drives-SSD-Knowledge/System-Requirements-for-M500-Hardware-Encryption/ta-p/145520
But I believe all these to be true. So, how can I get more info on why Windows thinks hardware encryption is not available? Would be nice if it logged the why!
Thank you.