MacOS X FileVault 2

With version 2 of the FileVault software, Apple introduced full disk encryption. Previous versions of FileVault only encrypted the user's home directory and were unsuitable for protecting confidential information. FileVault 2 is available in MacOS X 10.7 and later.

OS X 10.7 Lion OS X 10.8 Mountain Lion OS X 10.9 Mavericks

Users can set up FileVault on their Mac by following the steps in this knowledgebase article on the Apple website. Please ensure that your recovery key is stored in a safe place, as instructed in the article. Without this key, you will not be able to recover your data if you forget your encryption password.