What Does Full-Disk Encryption (FDE) Mean?
Full-disk encryption (FDE) is the encryption of all data on a disk drive, including the program that encrypts the bootable OS partition. It is performed by disk encryption software or hardware that is installed on the drive during manufacturing or via an additional software driver. FDE converts all device data into a form that can be only understood by the one who has the key to decrypt the encrypted data. An authentication key is used to reverse conversion and render the data readable. FDE prevents unauthorized drive and data access.
FDE is also known as whole disk encryption (WDE).
Techopedia Explains Full-Disk Encryption (FDE)
The encrypted data is inaccessible to an unauthorized users, even if the device is installed on another machine. After unlocking a computer, the data is automatically decrypted and readable. A disadvantage is that the encryption/decryption process slows data access time, particularly when virtual memory is used.
