Questions tagged [filevault]

FileVault is a macOS feature allowing full-disk encryption using XTS-AES-128 with a 256-bit key. Older implementations encrypted the user folder only.

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Cannot resize APFS partition

The drive is encrypted with fileVault. When i'm trying to grow Macintosh HD to fill Free Space i'm getting with diskutil apfs resizeContainer disk1 197g I'm getting: .... .... APFS Container Resize ...
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993 views

How can I repair EFI?

The computer is a MacBook Air. I have OSX Yosemite and Linux Ubuntu 14.04 dual boot. I messed up and damaged my Mac EFI and hence OSX ceased to work. Recovery disk was destoyed too. FileVault is on ...
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Decrypt an external hardrive FileVault

Recently, I had an accident with my Macbook Pro. I dropped water on it and the motherboard is now dead, which means my Macbook Pro is also dead. Hopefully, the hard drive isn't damaged. When I plugged ...
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Can you help me reformat my disk in recovery mode? Seriously botched Yosemite/FileVault installation

I have a mid-2011 macbook air. When I start up my computer, it automatically goes to recovery mode. I have a backup of my data, so I don't care what I have to do to get OS X working again. Disk ...
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1answer
11k views

Partition type suddenly FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF, drive unmountable

I have two drives inside my MBP, an SSD for the OS and the original HDD for large Data. The HDD has 3 Partitions: My Data (Core Storage volume) 20Gb for Linux 4Gb for Linux Swap Recently I ran ...
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FileVault just for /Users/[user] folders, ala Snow Leopard

I know there are many questions like this on AskDifferent, but I've found none that specifically address the fairly glaring omission in more modern Mac OS builds of per-user home folder encryption via ...
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184 views

Recover overwritten Encrypted OS X volume (APFS)

Is there a possibility to recover a 2TB APFS partition that has been altered by a fomatting command to a new 2TB APFS partion (i.e. the real data has not been deleted, encryption password is knonw, ...
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125 views

How can I cold-boot a mac with FileVault enabled without physical access to the mac?

If I had a Linux machine, I'd be able to enter the password for the encrypted boot disk in a serial terminal during the boot process, via another machine connected to the serial port I can SSH into. ...
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2k views

Macbook suddenly refusing password

Mid-work at airport, Macbook pops login screen. All of a sudden stops accepting my password (which is same password used for all services). After researching the issue and talking to Apple I was ...
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External Filevault disk permissions don't match users on migrated computer

I created a (bootable) backup disk for use in Carbon Copy Cloner and applied Filevault 2 following the CCC instructions. I am using the backup disk to transfer the files to a new computer. The old ...
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5answers
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Why does OS X show a forgot password prompt when trying to boot or wakeup screen?

Something came up today that bugged me a bit, I left my laptop on battery power before going to bed. When starting it up the battery was dead. I plugged it in, and here is what happened: The startup ...
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Data Not Backed Up, Partition Type: FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF

I was trying to install Linux on my MacBook for class when I bricked my computer, which now in an unbootable state. I made my partition too small, so I was going to delete and create a larger one. ...
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(Update Needed?) after PRAM reset, File Vault seems bricked

After many system instabilities and freezes I was suggested to do a PRAM reset. When I boot now and the File Vault asks for the password to decrypt the SSD the Guest user is gone and my user lost his ...
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1answer
2k views

A fast encryption for external hard drive

Is it possible to set up encryption such that backups are still reasonably fast? I will accept a 25 to 50% degrade in performance, but not a 10x blowup in time to completion. I have an 4 TB external ...
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Question regarding how Mac Security works with FileVault off

If FileVault is off, I know my disk is unencrypted but I don't quite understand what that means in regards to unauthorized access. How exactly would someone get into my Mac if it weren't encrypted, ...
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41 views

Protect data while laptop is at repair shop

I've got to give my computer (mid 2012 MBP, 15", running OSX 10.10) to a repair shop (not Apple store, but Apple authorised) for them to replace the battery. My concern is that someone at the repair ...
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Automatic Wi-Fi connection after formatting: how possible?

I have a MacBook, FileVault turned on. One day I formatted the internal SSD entirely (not just one partition), and started 'internet recovery'. The MacBook connected automatically to my home router's ...
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1answer
409 views

Time machine backup or File Vault encryption of encrypted disk image

I have a small encrypted disk image on my Mac (Yosemite), containing account numbers, tax reports and such. I created it using Disk Utility, from folder, which I subsequently safely deleted. I am also ...
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530 views

FileVault 2 Boot camp Partition

I have seen several different answers to this question and so I am a bit confused. If I enable Filevault 2 upon setup of my 2016 Macbook pro and THEN create a windows partition for boot camp, is the ...
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1answer
3k views

Can I stop Mac while FileVault is Decrypting?

As I asked above, I am leaving work and I have to bring my computer home. Can I close the screen and resume it later?
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786 views

Repair MacBook Air Prohibitory Symbol

I got a friends MacBook Air that isn't working after an update. When I boot, I see the Prohibitory Symbol. I tried to boot in safe mode, did a NVRAM and SMC reset and Apple's First Aid on the SSD. I ...
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Mounting Encrypted Core Storage Volume(s) On Startup [duplicate]

Okay, so I have three main volumes for my system; one for the OS (SSD) one for users and files (Fusion Drive) and one for backup. All three are encrypted Core Storage volumes. The problem is that ...
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How can I verify a Lion FileVault recovery key?

I have a volume that is encrypted with OS X Lion's full-disk FileVault. When I enabled FileVault I was given a recovery key, which I wrote down. I'd like to verify that the recovery key that I wrote ...
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9answers
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FileVault Stuck on Pause

I just got a new 13" rMBP with Yosemite installed. I chose to enable FileVault when I set the machine up. Now, several days later, an app called "Reverting from FileVault" shows on the list of apps ...
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Can't re-enable FileVault after growing `system` partition

I recently disabled FileVault in order to grow my system partition. This ended up being rather more complicated than expected, but it worked out in the end. Now that I have resized the system ...
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How do I encrypt an external drive with FileVault 2 in OSX Yosemite

Ok, so according to https://www.apple.com/osx/what-is/security/ I should be able to encrypt ANY external drive..."with ease" using FileVault 2. I have a brand new (empty) 2TB Fantom Drive model: ...
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1answer
518 views

Which encryption model (single-key, per-file-key) does APFS use after 10.13 upgrade

Based on Apple's developer documentation, APFS appears to support three models of disk encryption: No encryption Single-key encryption Multi-key encryption with per-file keys for file data and a ...
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identify if Filevault is enabled on remote Mac

I need to do remote checks to verify OSX has filevault enabled. When you enable filevault, does it create / change something on the HDD that I can check for on VPN login using my posture assessment ...
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564 views

Security implications of Lock Screen vs. Sleep vs. Log Out vs. Shut Down for physical access

I have a MacBook Pro with full disk encryption. I'd like to secure my information from someone who steals my computer or has physical access to it while it's unattended. Are any of these methods more ...
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643 views

Time Machine backup to encrypted disk

I have a huge problem. I just exchanged the SSD of my MacBook Pro. I made a backup just before - everything worked fine. Now I wanted to restore my Mac from the backup - Problem: apparently the ...
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5k views

Unexpected Progress Bar after login

I just install macOS 10.13 High Sierra and after entering my password to login a progress bar starts running. What's different is the background turns black and shows only a stark progress bar ...
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1answer
10k views

How Do I Stop FileVault from Decrypting my MacBook Pro?

Somehow I stupidly started to turn off my FileVault on my MacBook Pro. Not exactly sure how I did this, brain fart. Now my machine is trying to decrypt what I assume are all my files. Right now I ...
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1answer
309 views

FileVault2 boot volume corrupt after partition deletion

A client has a MacBook Pro Retina with a FileVault2 encrypted boot drive, and the Mac used to dual boot with Linux. Disk Utility apparently showed 4 partitions [Mac HD, Linux, and other 2 small ...
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2answers
27k views

Obtain FileVault 2 recovery key with administrator account

I enabled full disk encryption on my new MacBook Pro. (I am new to the Mac world but an accomplished Linux/UNIX and Windows type) However, I made a mistake and skipped the step of taking note of the ...
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67 views

Time machine - does it do its own encryption, beyond volume encryption?

Time Machine allows encrypted backups. Where does this encryption happen? Is the data written to files inside the time machine volume encrypted? If so: does this mean it's possible to end up with "...
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398 views

How to unlock Mac password?

I got a MacBook Pro (macOS 12.10.1) from my friend who I can't contact anymore, and here's the deal. It has only one administrator account with a login password (Which I don't know) It has FileVault ...
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Recover partitions after ‘diskutil partitionDisk’ command

I accidentally repartitioned my main storage hard drive, by using the following terminal command on it: diskutil partitionDisk disk2 GPT JHFS+ "Canvio" 0g The hard drive has about 3 TB of data on it,...
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439 views

Will encrypting the Windows partition with BitLocker wipe out the macOS partition?

I am running macOS and Windows on a macbook pro using bootcamp. I have encrypted my macOS partition using FileVault. I have read, that BitLocker on Windows on Mac would wipe the macOS partition. Is ...
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User account doesn't appear on first login screen

After restarting my computer when I am presented with the initial login screen (the light gray one with the restart and shut down buttons), I see only two of my three user accounts. If I log in with ...
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Brand new MacBook unuseable due to user account issue?

I bought a brand new MacBook and set it up earlier today. Went through setup, updated to High Sierra, enabled FileVault with a recovery key, wrote that down and then shut it down at some point. ...
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642 views

How to make sure MacOS Recovery creates a Recovery Partition with Time Machine Restore?

I took a Time Machine backup to an external drive from old MacBook (Sierra) and then put it to a new one (High Sierra automatically) using macOS Recovery and "Restore From Time Machine Backup". Drive ...
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1answer
51 views

Mac lag terribly when restarted from chosen Startup Disk

My Mac has Filevault from quite some time ago. Just now, I restarted it and went into recovery mode using cmd+R. From there, I select Startup Disk from the menu, unlocked, and clicked restart. ...
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Login screen showing pre-filevault lock message

Before Filevault was on, I had a lock message set using ≪Set Lock Message≫: After turning on Filevault, I changed the lock message. However, I realize that when I restart the computer, the ...
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13k views

How long would it take for FileVault to encrypt my Retina Macbook Pro?

I have a Retina Macbook Pro with the following specifications : Mountain Lion OSX 10.8.2 Processor 2.6 GHz Intel Core i7 Memory 16 GB 1600 MHz DDR3 - 500 GB Flash Storage 286.83 GB of 499.42 ...
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699 views

Trapped in Windows

A similar question has been asked here: Bootcamp stuck in Windows, but mine is a little different - the answer did not work for me. I have a MacBook Pro 13,2 that is running 10.13.1 and has a Boot ...
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Help with VNC (via school Wi-Fi) without consent? Opsec

I'm in a tough situation and am hoping you can help me out. As a student in California, USA, our teachers sometimes require us to sign on to the school's wireless network. Supposedly, they have an ...
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There was an error in Security & Privacy preferences

I head on to Security & Privacy on Filevault and try to encrypt my disk. When I click the Turn On Filevault I get the error. When going through the syslog I see this: Dec 3 00:09:48 --- last ...
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3answers
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Downsides of encrypting disk with FileVault

Is there any downside of encrypting my OS X 10.10.5 laptop via FileVault, in terms of usability? Obviously, if I lose the password I can no longer use the laptop. (out of interest is that correct, ...
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575 views

FileVault will not finish and cannot turn FileVault Off

I have a MacBook Air and when I tried to install High Sierra, I was unable to do so because I received the message that I needed to turn FileVault off. When I went to FileVault it showed that it is ...
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1answer
3k views

How to stop file vault decrypting and re enable encryption?

SHORT QUESTION : Ive got a macbook pro, late 2012, osx 10.10.5, with file vault enabled. Now when i go to System Preferences > File Vault i get the following decryption screen (see below ...