Get(SystemDrive)Returns the drive letter (Windows) or volume name (Mac OS) where the currently running operating system is located.For information on how functions evaluate differently on the host versus the client, search the FileMaker Knowledge Base available at www.filemaker.com/kb.Returns /C:/ in Windows when the operating system is on the C: drive.Returns /DriveName/ in the Mac OS when the operating system is on a volume named DriveName.