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10.6: Update renders Mac with PGP disk encryption unbootable
Authored by: johnnym on Nov 19, '10 07:16:45AM

david29, you are getting the 'Unable to verify efi state' because your internal boot disk is not encrypted. It does not apply to your internal boot disk.

Were you ever able to decrypt and boot off of your external before 10.6.5? My guess would be no. Here's why:

- You have a regular unencrypted boot drive.
- You attach an external that you encrypt.
- You use SuperDuper to clone your unencrypted boot drive to the external

Essentially you put your copy in a box and locked it. I don't know offhand how PGP WDE works under the hood but I would think that there is a small bootable part that allows you to bootstrap the machine to the point where you would get the PGP WDE prompt to supply your password. If you supply the proper password, it will then decrypt the drive and finish booting. Without that small bootable part (partition?) to get you to PGP WDE, you won't get very far. With your setup of locking the whole external disk with PGP, you're probably encrypting even that small bootable part because SuperDuper is putting everything into the encrypted drive. You've locked the box from the inside and there is nowhere to put the key to unlock it.

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