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The difference is minimal, from my experience. When I made a fresh upgrade to Yosemite, I did some tests. I have 16Gb RAM, and 2 internal SSDs - one unencrypted, and one encrypted with FileVault2. On the encrpyted disk, there's a encrypted sparsebundle where Firefox profiles are stored. I can't remembered the numbers, but after comparing the read/write ...


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An encrypted partition would likely be faster. With a disk image, you're actually accessing two filesystems, one within the disk image, and the one on which the disk image is stored, as well as the technologies needed to read the disk image itself. It seem unlikely that a disk image could ever be faster than full-disk encryption, but you would have to run ...


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I'm afraid there are not many options given an ordinary, "home user" budget. Theoretically you could send the drive in to a recovery service such as IBAS to get them to recover the original data on the drive. If this is even remotely possible depends on what kind of physical medium you had (i.e. is it SSD or spinning-platter hard drive). If they can recover ...


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I don't know how to solve the iCloud issue, but I'd recommend instead that you use an excellent encryption tool like GPG or TrueCrypt (7.1a only!!) to encrypt a text file that has your FileVault Recovery Key and then you can upload that file to iCloud file storage or any Cloud service you like -- then it's super secure AND you don't have to jump through ...



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