Has anyone turned off FileVault after it has completed? Said about 975GB read/write at the end and the speed varied from 40MB/s to 20 or even 10MB/s at the very. FileVault Setup.app – local FileVault 2 encryption setup and enforcement April 29, 2013 rtrouton Leave a comment Go to comments I was recently asked to help test a new utility called FileVault Setup for setting up and enforcing FileVault 2 encryption.

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• Filevault Decryption Slow
• How To Stop Filevault Decryption In Progress
• Speed Up Filevault Decryption Windows 10

Turn on and set up FileVault

FileVault 2 is available in OS X Lion or later. When FileVault is turned on, your Mac always requires that you log in with your account password.

1. Choose Apple menu () > System Preferences, then click Security & Privacy.
2. Click the FileVault tab.
3. Click , then enter an administrator name and password.
4. Click Turn On FileVault.

If other users have accounts on your Mac, you might see a message that each user must type in their password before they will be able to unlock the disk. For each user, click the Enable User button and enter the user's password. User accounts that you add after turning on FileVault are automatically enabled.

Choose how you want to be able to unlock your disk and reset your password, in case you ever forget your password:

• If you're using OS X Yosemite or later, you can choose to use your iCloud account to unlock your disk and reset your password.*
• If you're using OS X Mavericks, you can choose to store a FileVault recovery key with Apple by providing the questions and answers to three security questions. Choose answers that you're sure to remember.*
• If you don't want to use iCloud FileVault recovery, you can create a local recovery key. Keep the letters and numbers of the key somewhere safe—other than on your encrypted startup disk.

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. You can check progress in the FileVault section of Security & Privacy preferences. Any new files that you create are automatically encrypted as they are saved to your startup disk.

When FileVault setup is complete and you restart your Mac, you will use your account password to unlock your disk and allow your Mac to finish starting up. FileVault requires that you log in every time your Mac starts up, and no account is permitted to log in automatically.

Reset your password or change your FileVault recovery key

If you forget your account password or it doesn't work, you might be able to reset your password.

If you want to change the recovery key used to encrypt your startup disk, turn off FileVault in Security & Privacy preferences. You can then turn it on again to generate a new key and disable all older keys.

Turn off FileVault

Filevault Decryption Slow

If you no longer want to encrypt your startup disk, you can turn off FileVault:

1. Choose Apple menu > System Preferences, then click Security & Privacy.
2. Click the FileVault tab.
3. Click , then enter an administrator name and password.
4. Click Turn Off FileVault.

Decryption occurs in the background as you use your Mac, and only while your Mac is awake and plugged in to AC power. You can check progress in the FileVault section of Security & Privacy preferences.

Learn more

• Learn how to create and deploy a FileVault recovery key for Mac computers in your company, school, or other institution.
• If you're using FileVault in Mac OS X Snow Leopard, you can upgrade to FileVault 2 by upgrading to OS X Lion or later. After upgrading OS X, open FileVault preferences and follow the onscreen instructions to upgrade FileVault.
• RAID partitions or non-standard Boot Camp partitions on the startup drive might prevent OS X from installing a local Recovery System. Without a Recovery System, FileVault won't encrypt your startup drive. Learn more.

* If you store your recovery key with Apple or your iCloud account, there's no guarantee that Apple will be able to give you the key if you lose or forget it. Not all languages and regions are serviced by AppleCare or iCloud, and not all AppleCare-serviced regions offer support in every language. If you set up your Mac for a language that AppleCare doesn't support, then turn on FileVault and store your key with Apple (OS X Mavericks only), your security questions and answers could be in a language that AppleCare doesn't support.

Apple’s first pass at built-in encryption was, frankly, terrible. The original FileVault, introduced with 10.3 Panther in 2003, only encrypted a user’s home directory, and had a number of functional and implementation problems. FileVault 2 appeared in 2011 with 10.7 Lion, and had almost nothing to do with the original except the name.

FileVault 2 offers full-disk encryption (FDE). When enabled, the entire contents of the startup drive are encrypted. When your computer is powered off, the drive’s data is fully unrecoverable without a password. It also lets you use Find My Mac to wipe your drive in a matter of seconds remotely if you’re concerned about into whose hands your computer has fallen. You can enable FileVault 2 with an existing Mac, but starting with 10.10 Yosemite, OS X now encourages turning on FileVault 2 during setup of a laptop.

This has made some law-enforcement officials unhappy, who seemingly don’t want your data to be protected this strongly, so they can get access in the unlikely event that they need it. Relatively few people engage in criminal activities, and of them, even fewer ever have their computers seized and examined. It’s a good sign as to how well FileVault 2 works that officials are so morose about it.

FileVault 2 takes advantage of the ever-improving processor speed and features in Macs to perform on-the-fly encryption and decryption. Every chunk of data read from and written to disk, whether of the spinning variety or SSD, has to go through this process. Macs introduced starting in 2010 and 2011, and every model since, can use encryption circuitry in the processor, boosting performance.

FileVault 2 works hand in hand with OS X Recovery, a special disk partition that lets you run Disk Utility from the same drive you may be having trouble with, restore or install OS X via the Internet, restore a Time Machine backup, or browse Safari. With FileVault 2 enabled, your computer boots into the Recovery volume, prompting you to login with any account that’s been allowed to start up the computer.

How To Stop Filevault Decryption In Progress

How to use FileVault 2

On a system without FileVault 2 already in place, you need to turn it on, which converts your startup drive from its unencrypted state to fully encrypted. This comes with a few big flashing red warnings and pieces of advice before you proceed. (You can encrypt secondary and external drives by Control-clicking a drive’s icon and select Encrypt “Drive Name,” but it doesn’t tie in with login: you set a password for the drive, and have to enter it to mount it.)

Speed Up Filevault Decryption Windows 10

Warning 1! During the setup, OS X creates a Recovery Key for your drive. As with Apple’s two-step verification for Apple ID accounts, this Recovery Key is critical to retain. Without it, if you lose or forget the account password to all FileVault 2–enabled accounts, your drive is permanently inaccessible. Keep a copy of the Recovery Key, probably printed out, for emergencies.

Warning 2! Once you start the conversion, there’s no stopping it. It has to complete, and it consumes CPU resources like mad, slowing down your machine and likely firing up the fan to high speed. Your computer also has to remain plugged in. The operation takes many hours. A friend’s niece accidentally accepted the option to enable FileVault 2 when upgrading to Yosemite a few evenings ago, and had her machine—needed for a computer-science class the next morning—slow to a crawl.

Apple provides step-by-step details in a Knowledge Base note, so I won’t repeat all of that, but will highlight the critical parts.

• Only accounts enabled with FileVault 2 can unlock the volume at boot time after a cold start (when shut down) or restart. For accounts you don’t opt to enable, restarting or starting up will require an account with permission logs in, then logs out. If you’re helping set up FileVault 2 for a novice user who trusts you, you may ask them to create an account for you that would let you log in if they can’t.

• Accounts that use an iCloud password for login do provide a way out if you forget or lose an account password, but also offers a security risk if someone obtains your iCloud account information. (During a Yosemite upgrade, you can choose this explicitly when enabled FileVault 2 by checking a box that reads “Allow my iCloud account to unlock my disk.” Oddly, Apple has no information about this option on its support site.)

• The option to store your Recovery Key on Apple’s servers is secure, in that Apple apparently can only unlock the key given information you provide, exactly as it’s typed, including capitalization. It doesn’t retain enough information to unlock it independently. However, it does put the key in the hands of a party other than yourself, making it possible under the right circumstances for a government agency or ne’er-do-wells to legally or socially engineer access to your recovery key.

Once the conversion is complete, the startup drive is fully protected within the limits of exposure I note above.

What’s even niftier is that with Find My Mac enabled on the computer, you have a sort of secret weapon. Find My Mac works when the computer is booted and connected to a network. You can play a sound, lock the computer, locate it (if Wi-Fi networks or other cues to location are nearby), and erase it. Because FileVault 2 relies on a stored encryption key, erasing the drive wipes that key, rendering the drive unrecoverable, even by you.

But the extra-secret secret weapon is Guest mode. When a user logs in as a guest and connects to a network, or the Mac automatically connects to a known network, Find My Mac continues to work. Thus, if someone finds your computer, any message you send with the Lock option can appear, even if it was online before they log in as a guest. But so too can an Erase request make its way through silently.

FileVault 2 can make nations quake, apparently, but it’s just a bit of good information hygiene, letting you make choices about the degree of vulnerability you want to tolerate for your locally stored data and any software or stored passwords for services in your accounts. With it off, you’re not risking everything, but with it on, you have a high degree of assurance about who can access what.