windows 10 uefi add

system/boot/grub2/files/42_custom

@@ -0,0 +1,10 @@
+#!/bin/sh
+exec tail -n +3 $0
+# This file provides an easy way to add custom menu entries.  Simply type the
+# menu entries you want to add after this comment.  Be careful not to change
+# the 'exec tail' line above.
+menuentry 'Windows 10' --class windows --class os {
+set root='hd0,gpt2'
+chainloader /EFI/Microsoft/Boot/bootmgfw.efi
+boot
+}