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I decided to streamline the partitioning scheme as much as possible. I deleted my leading, unused partition, but this still didn't make it go. Somehow the partition type of the EFI partition had gotten changed, so I decided to fix that. There doesn't seem to be any obvious way to do this from within OSX, so I rebooted off of a live Ubuntu boot image on a ...


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No. Given the scenario you describe (re-install, restore from Time machine backup) the previous Filevault2 password will be gone. Just make sure you did not exclude important files in System Preferences > Time Machine > Options...


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I've always wondered the same thing: how to keep OS X from storing the WPA passphrase (or PSK) in NVRAM. Using 'nvram' I could never find the variable that I thought held these credentials. Today, I tried booting to a USB live image of Linux and running Chipsec. Its command to list EFI variables has many more results than I was getting by running nvram ...


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If you put some light on back through apple logo you can see the logging screen more clearly!


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Filevault prevents the theft of data not the device. If they boot to recovery partition or jump drive they can wipe and reinstall and your data is still safe. if you want to prevent that from happening you need to add a firmware password. So this would be the best combo filevault firmware password lost mode however if they know what they are doing they ...



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