(In reply to Prexy Prexy from comment #10) > Created attachment 657475 [details] > Windows BCD file Please paste output of "rpm -qi os-prober". Your BCD file does contain "Windows 10" string so it should match. Also please try (adjust path to BCD file as needed) grep -qas "W.i.n.d.o.w.s. .1.0" /path/to/Boot/BCD echo $? What is displayed (0 or 1)?