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How does FileVault use up less disk space?
Often ten or more gigabytes less space on drives in the 250 to 500 GB size and normal moderate file usage of photos, music and light video storage needs. The new implementation uses only a fixed amount of space to handle the storing of the keys needed to decrypt the core storage.
What does legacy FileVault do in OS X?
Basically, it can permanently lock you out of your user account. The original FileVault, now called legacy FileVault, was first released in OS X Panther. Basically, legacy FileVault protected a user’s home directory by way of an encrypted sparse disk image.
Why is macOS 10.13 incompatible with FileVault?
An error message will pop up indicating that macOS 10.13 is incompatible with a FileVault account — again, even if the account does not have legacy FileVault enabled. If you run into this problem, it’s worth trying this solution. Click on the Apple logo in the left-hand corner of the top menu bar. Choose System Preferences. Select on FileVault.
How does the new FileVault work in Mac OS X?
The new FileVault is block level full-disk encryption, and as such exists completely outside the filesystem, and therefore it takes up zero filesystem space. It might take up a small amount of actual disk space, but the number you see when you “Get Info” your disk in Mac OS X will never be affected by Lion’s new FileVault.
How do I change the recovery key for FileVault?
After FileVault has finished encrypting the startup disk and you restart the Mac, entering your account user ID and password unlocks the disk and lets the Mac finish startup. To change the recovery key that’s used to encrypt the startup disk, turn off FileVault in Security & Privacy preferences. Turn it on again, and a new key is generated.
Is it safe to use File Vault with FileVault?
Yes Filevault will slow down performance as it has to encrypt and decrypt everything going to and from the boot drive. This is late but I can safely (or unsafely, as the case may be) say DO NOT USE FILE VAULT UNDER ANY CIRCUMSTANCES.
What kind of encryption key does FileVault use?
FileVault full-disk encryption (FileVault 2) uses XTS-AES-128 encryption with a 256-bit key to help prevent unauthorized access to the information on your startup disk.
What happens if I Lose my FileVault recovery key?
If you lose both your account password and your FileVault recovery key, you won’t be able to log in to your Mac or access the data on your startup disk. Encryption occurs in the background as you use your Mac, and only while your Mac is awake and plugged in to AC power.