This article describes how to migrate from TrueCrypt to Symantec Drive Encryption, and provides instructions on how to create a small virtual disk that can be shared with other users of Symantec Drive Encryption for Windows or Mac OS X. This portable virtual disk can also be shared in the cloud (such as via Dropbox).
File container encrypted by TrueCrypt
Create a PGP Virtual Disk
For more information:
Symantec Drive Encryption best practice http://www.symantec.com/business/support/index?page=content&id=TECH149543