diff --git a/internal/schema1/schema1.go b/internal/schema1/schema1.go
index 6cffdc6d9d..2a1cee47a9 100644
--- a/internal/schema1/schema1.go
+++ b/internal/schema1/schema1.go
@@ -59,6 +59,8 @@ type MappedVirtualDisk struct {
 	ReadOnly          bool   `json:",omitempty"`
 	Cache             string `json:",omitempty"` // "" (Unspecified); "Disabled"; "Enabled"; "Private"; "PrivateAllowSharing"
 	AttachOnly        bool   `json:",omitempty:`
+	// LinuxMetadata - Support added in 1803/RS4+.
+	LinuxMetadata bool `json:",omitempty"`
 }
 
 // AssignedDevice represents a device that has been directly assigned to a container