http://forum.parallels.com/showthread.php?t=17638から。 a. Go to Finder - Applications - Utilities - Terminal. b. Type and run the following commands: • sudo rm /System/Library/Extensions/vmmain.kext • sudo rm /System/Library/Extensions/hypervisor.kext • sudo rm /System/Library/Extensions/helper.kext • sudo rm /System/Library/Extensions/ConnectUSB.kext • sudo rm /System/Library/Extensions/Pvsnet.kext