Example: Bitlocker: during encryption process, the pc got shutdown suddenly due to power failure, part of the data will be left unencrypted, which intruder can gain access to.
I'm thinking will bitlocker + efs solve this issue? Since efs will ensure the encrypted data can only be access by a particular user. So even if someone got holds are the hdd (which has a failed bitlocker encryption process example 20%). He/she wouldn't be able to access since he/she needs to login using username/password.