Why not Encrypting File System (EFS)?
Okay, no third party encryption software. But what about the Encrypting File System (EFS)? It is perfectly integrated into Windows and like BitLocker it can be managed centrally. The advantage of EFS is that you don’t need Windows 7 Enterprise or Ultimate and you can deploy Windows Professional instead. However, the problem with EFS is that you can’t encrypt the whole system drive. Therefore, EFS doesn’t help with the concerns I outlined above. EFS is useful if you want to encrypt a couple of private files. But it is no option for encrypting a whole disk drive.
