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I found that the problem was faulty ram after doing hardware diagnostic tests. In order to do this you might need to boot from the Apple "ASD" images. To find the correct one for your machine this website has a list of which ASD relates to each Mac product. http://www.dannydullin.com/apple-service-diagnostic-asd-reference-list/ After you know the "ASD 3S**...


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The 27" iMac from Mid-2010 (i5, 2.8Ghz) had an i5-760 inside. The model is, in fact, a Lynnfield processor with quad cores.


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The partition map is completely valid - the CoreStorage stack is messed up though. After creating a CoreStorage stack (e.g by enabling FileVault) the CoreStorage logical volume group should contain at least one physical volume, one logical volume family and a logical volume. In your case the last two are missing due to CS stack corruption. The output of ...


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The Enable Users…-button is only available in the Preferences Pane Security & Privacy > FileVault if one or more users is/are not enabled to use FileVault. You may test this yourself: open Terminal and enter: sudo fdesetup list to list all FileVault enabled users Remove one user: sudo fdesetup remove -user user_name wait a few seconds and open ...


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filevault is a security protocol. it blocks anyone else from using your OS and your system. Your system (OS) is an integral part of the equation in trouble-shooting whats wrong with your mac (primarily because 90%+ of the time, the loose nut on the keyboard is the cause of the issue)... you can't simply 'unlock it'... there is no unlock..that's why it's a ...


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In my experience they don't insist anything except you ensure you have a backup of the data should service erase it. If they don't have your password, they can boot to another OS to test. If the issue is your software, they won't be able to advise - but even knowing you have OK hardware will help you then finish the troubleshooting. Perhaps your ...


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This is pretty simple. In System Preferences go to the Users & Groups Preference Pane click on Login Options click to unlock (bottom left) if needed and authenticate verify Automatic Log in is on the user you wish to use go to the Security & Privacy preference Pane enable your user for FileVault reboot You will select your user from the picker ...


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If you choose to "Create a recovery key and do not use my icloud account" it means that the key stored in icloud can no longer decrypt your disk. Only the key you made (and wrote down, took a screenshot of, or took a picture of with your camera), will allow you to decrypt. If you chose to store the key with apple as well then you would get prompted to answer ...


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The partition disk2s5 has the wrong partition type. It should be 53746F72-6167-11AA-AA11-00306543ECAC instead of FFFFFFFF-FFFF-FFFF-FFFF-FFFFFFFFFFFF! To solve this boot to Macintosh HD (disk0s2/disk1), open Terminal and enter: to get an overview: diskutil list below I assume the external disk has the disk identifier disk2 sudo gpt -r show /dev/disk2 ...


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I had a similar problem. After several back and forth my hard drive was replaced by Apple. Problems with FileVault could be a warning sign that you drive is dieing.


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My wife bought a 11-inch MBA about a year ago. I turned on filevault as part of the setup, and had the same issue. We took it back to the apple store, and asked for a replacement citing the one she as being defective. In the stores, Apple isn't shady - we got a simple swap with smiles. The new one did FileVault2 just fine. Everyone should do it exactly ...


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You should be able to resize the CoreStorage stack by booting to a second boot volume (e.g. Internet Recovery Mode) after modifying the partition table. Afterwards you have to re-add the partitions in the old boundaries but with proper types. Preparation: Restart to Internet Recovery Mode by pressing alt cmd R at startup. The prerequisites are the ...


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NEVER EVER TURN ON FILEVAULT....WORST THING YOU WILL EVER DO. if something goes wrong in the startup process you mac will not turn on and you will need to call support. They will walk you through several steps and then have you turn it off. I just spent the better part of two hours doing this. And by the way you may lose the contents of your home ...



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