Encrypting a partition using PGP Desktop for Mac OSX.
Beginning with PGP Desktop 10, you can encrypt non-boot partitions on Mac OS X systems. This feature is available from the terminal command line interface only. PGP Desktop 9.9 and newer allow encryption of the boot drive on Mac OS X systems.
Caution: Apple's Boot Camp product works only when there are two partitions on the disk: one for Mac OS X and one for Boot Camp. Because PGP Desktop adds another partition, Boot Camp does not work on a Mac OS X system with PGP Desktop 10.0 or later.
Other virtualization software (Parallels, for example) work normally on a Mac OS X system with PGP Desktop 10.0 or later. PGP Corporation strongly recommends uninstalling Apple Boot Camp before installing PGP Desktop.