Returns the drive letter (Windows) or volume name (macOS) where the running operating system is located.
Get(SystemDrive)
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FileMaker Pro 8.0
•This function is supported only in FileMaker Pro Advanced and runtime solutions. In other FileMaker products, it’s not supported and returns an empty string.
Returns /C:/ in Windows when the operating system is on the C: drive.
Returns /DriveName/ in macOS when the operating system is on a volume named DriveName.