UWF_OverlayConfig.SetMaximumSize

Sets the maximum cache size of the Unified Write Filter (UWF) overlay.

Syntax

UInt32 SetMaximumSize(
    UInt32 size
);

Parameters

size An integer that represents the maximum cache size, in megabytes, of the overlay.

Return Value

Returns an HRESULT value that indicates WMI status or a WMI error.

Remarks

When the size of the overlay reaches the size value, UWF returns an error for any attempt to write to a protected volume.

If the overlay type is disk-based, your device must meet the following requirements to change the maximum size of the overlay.

  • UWF must be disabled in the current session.
  • The size value must be at least 1024.
  • The system volume on your device must have available free space greater than the new maximum size value.

If the overlay type is RAM-based, your device must meet the following requirement to change the maximum size of the overlay.

  • UWF must be disabled in the current session.

Requirements

Windows Edition Supported
Windows 10 Home No
Windows 10 Pro No
Windows 10 Enterprise Yes
Windows 10 Education Yes

UWF_OverlayConfig

Unified Write Filter