The GetFreeSpace method returns free space in gigabytes - option can be: “internal” or “external”.
freeInternalSpace = app.GetFreeSpace("internal"); freeExternalSpace = app.GetFreeSpace("external");
function OnStart() { freeInternalSpace = app.GetFreeSpace("internal"); freeExternalSpace = app.GetFreeSpace("external"); app.Alert( "Free internal space:\n" + freeInternalSpace + " GB\n" + "Free external space:\n" + freeExternalSpace + " GB" ); }