Does PGP Desktop 10.2.1 MP4 or MP5 support iMac fusion drives?
This article makes me think that PGP doesn't work with fusion drives - FEATURE REQUEST: PGP Whole Disk Encryption Support for Apple Fusion Drive Technology http://www.symantec.com/docs/TECH200355
Thanks
According to that Knowledge Base Article, which was just updated yesterday, the fusion support you desire is not yet supported. The KBA states that it will be updated when this status changes.