Overlay Settings Menu

The Overlay Menu in WriteGuard allows you to view and configure how UWF stores temporary changes. The overlay can be stored in RAM or on disk and has configurable thresholds.

Accessing the Overlay Menu

From the main menu of writeguard.bat, press O.

Options

Get Overlay Config: G

Displays the current UWF overlay configuration, including storage type, size, and thresholds.

Get Available Space: A

Shows how much space is left in the UWF overlay.

Get Consumption: C

Displays current overlay usage.

Set Size: S

Sets the maximum size of the overlay in megabytes (MB).

Warning

If the overlay fills up, the system may become unresponsive.

Set Storage Type: T

Choose where the overlay is stored: - RAM: Faster, but limited size. - Disk: Slower, but allows more space.

Set Warning Threshold: W

Sets a warning level for overlay usage. A notification can be triggered when this threshold is reached.

Set Critical Threshold: L

Sets a critical limit for overlay usage. Reaching this may result in system instability.

Toggle Free Space Passthrough: P

Controls whether UWF reports actual or overlay-limited free space.

  • ON: Shows full drive space (including overlay).
  • OFF: Shows only what's available in overlay.

Toggle Persistent Overlay: O

When enabled, overlay data persists across reboots. Useful for testing.

Reset Persistent Overlay: I

Clears the persistent overlay state.

Reboot: R

Reboots the system to apply overlay changes.

Return to Main Menu: B

Returns to the main menu.

Notes

  • Overlay space is where temporary changes are stored while UWF is active.
  • Keeping an eye on consumption and thresholds helps prevent crashes.
  • Use persistent overlays carefully — they may give a false sense of data being saved.