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Edge HMI

InfoDiskFree

  • Last UpdatedOct 29, 2026
  • 1 minute read

InfoDiskFree is a built-in function that checks a specified drive on the local computer or device and then returns the amount of free space on that drive.

Function

Group

Execution

String Exp.

Windows

Windows Embedded

IoT View

Thin Clients

Mobile Access

InfoDiskFree

System Info

Synchronous

Yes

Supported

Not supported

Supported

Supported

Supported

Syntax

InfoDiskFree(strDisk)

InfoDiskFree ( strDisk )

strDisk

The name of the drive to be checked.

Note: Follow the conventions of the target platform for the file path and name, and separators. For example, a file path in Windows starts with a drive letter and uses backward slashes as separators (C:\path\to\file), while a file path in Linux starts at the root directory and uses forward slashes as separators (/path/to/file).

Return value

This function returns the amount of free space in bytes, as a real number. For example, a return value of 2803804605.000000 is approximately 2.7 GB.

Examples

Check drive C on a Windows computer:

InfoDiskFree("C")

Check the home directory on a Linux device:

InfoDiskFree("/home")

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