FileVault is a disk encryption feature on Apple’s macOS operating system that provides enhanced security for user data. It encrypts the entire hard drive, making it nearly impossible for unauthorised users to access the data stored on it. Using XTS-AES encryption to secure the drive, it requires a password or recovery key to unlock it.

FileVault is designed to protect user data in case of loss or theft of the device. With FileVault enabled, the entire hard drive is encrypted, including the operating system and all user data, making it inaccessible without the password or recovery key.

This feature provides an additional layer of security for users who work with sensitive information, such as financial records or personal information. Additionally, FileVault can be easily enabled in the System Preferences, allowing users to secure their data quickly and efficiently.