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Special thanks for the CSS from its creators at:, and! I noticed in another comment you said it's been 2 or 3 hours. You've got some time left. See the problem is.
Lets just say you have a 500 GB hard drive with 475 GB of data on it. That means your hard drive only has 25GB of wiggle room to decrypt your data.
You see, File Vault needs to make a copy of a encrypted file on the drive until it has finished making a decrypted copy. If you have a lot of large files like videos or games, it's going to take a long time.
Heck, I've seen File Vault take over two days to finish. Go find something else to do with your time.
A reader recently emailed us asking about FileVault, Apple’s encryption scheme on Mac OS X. She wasn’t sure what it did, or if she should enable it on her new MacBook. The feature is by no means new, but the recent release of OS X Mavericks and the number of users new to the Apple platform warranted a fresh look at FileVault. So, exactly what is FileVault? The Original FileVault First, it’s important to clarify that the version of FileVault currently in use since OS X Lion is FileVault 2, which represents a significant change from the original FileVault, called “Legacy FileVault” by Apple.
But before we explain FileVault 2, let’s talk about its predecessor. FileVault was first introduced in 2003 as part of as an on-the-fly encryption scheme for protecting a user’s data. Once enabled, a user’s data was encrypted by the operating system within a sparse disk image (later operating systems utilized the more efficient sparse bundle disk images). While a user’s account password could unlock the FileVault encryption when logging into the Mac, the user would also need to create a “Master Password” in the event that the user account password was lost. While logged in, Legacy FileVault would decrypt and re-encrypt data as the user needed it, all on demand. While certainly not required, the benefit of FileVault was that user data was protected from unauthorized users or thieves who lacked the necessary password. If your Mac was stolen, for example, FileVault-encrypted data would be very difficult for a thief to access.
While less technologically savvy thieves under normal circumstances may be thwarted by a user account password, those with any experience would be easily able to pull the Mac’s hard drive, attach it to a second system, and enjoy unfettered access to the drive’s data. But if the user’s data was encrypted, it would generally be safe from those without the FileVault password. But there were several issues with the Legacy FileVault.
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First, it only encrypted the user’s home folder. While most users maintain all of their important data inside their home folder, some may have files scattered throughout the Mac’s system drive, inadvertently or not. These files outside the home folder, which also include other user accounts on the Mac that haven’t enabled FileVault, would be totally unprotected in the event of theft or other unauthorized access.
There were also problems with the encryption method used by the first implementation of FileVault. The scheme utilized, or CBC, modes of encryption which, by the end of the original’s FileVault’s lifespan, could be by experienced hackers. Further, from a more user-centric perspective, the way that FileVault handled encryption of only the user home folder led to issues and annoyances with tasks like file sharing and. Make no mistake, Legacy FileVault offered relatively good protection for most users, and was certainly better than nothing when it came to protecting critical data of a personal or business nature.
But there was certainly room for improvement and, like it does so often with its consumer products, Apple decided to change things significantly for the next version of FileVault. Continued on page 2.
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