This is mostly a general question about full disk encryption, but I have bitlocker in mind.
- What does it mean when people say full disk encryption? Because I imagined that it literally encrypts the whole physical disk, which requires a pre-boot decryption for it to work. I got confused because when I was about to turn on bitlocker, I had turn it on for each logical partition, C:\, D:\, E:\, instead of the whole disk at once. Does it mean it's not a full disk encryption then?
- From a security point of view, is there a difference between full disk encryption and encrypting per partition?
- (Terminology question) Is there a difference between full disk encryption and full drive encryption? e.g. disk refers to the physical item and drive the logical partition?