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At work, several people use my machine.

Can I set my home folder to be inside an ecrypted disk image?

How would it work as far as mounting/unmounting whenever I log in/out?

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    In what version of OS X? FileVault encryption changed with the advent of Lion. – Dave Aug 21 '13 at 21:55
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OS X Mountain Lion (10.8) and OS X Lion (10.7)

  1. Open Disk Utility.

  2. File => New => Disk Image from Folder.

    enter image description here

  3. Select the directory you want to encrypt (home directory).

  4. Click Image.

  5. Set the Image Format to be Read/Write and the encryption to 128-bit AES.

  6. Choose a password.

Accessing the Encrypted Folder & Contents

  1. Open the encrypted folder image with a double-click, treating it as a normal disk image.
  2. Enter the password used during the initial encryption setup – do not check Remember password.
  3. Access the encrypted folder and the contents as a mounted virtual disk, you can modify, copy, edit, delete, and add to it.
  4. When finished, close the files and eject the virtual image to re-secure the folder and files and require a password for future access.

More Pertinent Information

You will want to store the encrypted disk image somewhere accessible enough, since you will be using a double-click to try to mount the folder image in Finder, and of course you will need the password to access the files.

With a readable and writable encrypted disk image, you can treat it as a normal folder and copy, delete, or move files from the image. Anything brought into the image while mounted will become encrypted automatically under the same protective layer with the same password. When you are finished working with the folder and want it password protected again, simply unmount the disk image. Regaining access again will require the password before it can be mounted and available.

3rd Party Apps/Snow Leopard Compatible

  1. Knox- Create as many encrypted vaults as you want, each with separate passwords. Then schedule automatic backups. You can even reformat USB sticks and external drives as encrypted Knox vaults - moving files between Macs has never been so simple and secure.

  2. Espionage-Unobtrusive and intuitive, Espionage is the most advanced encryption solution for Mac OS X, yet easiest to use. Espionage lets you encrypt individual folders and application data, and interact with them straight from the Finder.

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