This article details the System Requirements for PGP Desktop 10.2.1 for Mac OS X.
Operating System
Hardware
Note: PGP Whole Disk Encryption (PGP WDE) is not compatible with any third-party software, other than Apple Boot Camp, that could bypass the PGP WDE protection on the Master Boot Record (MBR) and write to or modify the MBR. Boot Camp needs to modify MBR before installing the Windows OS and cannot be used on a Macintosh system that is already encrypted with PGP WDE. To use Boot Camp with PGP WDE, refer to the installation instructions in the PGP Desktop for Mac OS X User's Guide.