由於 PGP WDE 在處理 Mac OS X Hibernation 回復時，會使用到一個特殊的檔案，但 Mac OS X Hibernation 回復時是拒絕任何外來檔案
所以為了防止系統出現問題或是Hibernation 回復時資料的遺失，PGP WDE disable Mac OS X Hibernation function
http://www.symantec.com/business/support/index?page=content&id=TECH149486&viewlocale=en_US
Mac OS X
PGP Whole Disk Encryption is not supported with hibernation mode in the Mac OS X. In Mac OS X, an image file is created upon hibernation of the system. Once power is restored, the state of the system is restored, including any open programs or other processes that were running. The location of this file is in /var/vm/sleepimage and is the size of RAM memory on the system.
This mode may be referred to as Safe Sleep, Deep Sleep, or Hibernation. This is not the normal Sleep mode in which the power can remain on, but the system is essentially idle. This mode does not keep an image of the processes, but rather the information is stored in the RAM memory.
The Mac OS X operating system does not support foreign file systems for hibernation. Mac OS X Hibernation mode is not supported with “boot != root". This “boot != root" is essentially the system used by Mac to boot a foreign file system. For PGP Whole Disk Encryption to boot a system, a special file system is used which is considered foreign. As PGP Whole Disk Encryption is considered a foreign file system,hibernation mode is not supported by the Mac OS X< /strong>.
As a safeguard to prevent system issues and data loss, PGP Desktop disables the hibernation mode on Mac OS X. Although Sleep will still work, deep sleep does not build a sleep image