grub.cfg: add isolinux menuentry for ata* (replace broken cd/dvd menuentry)

resources/grub/config/grub.cfg

@@ -155,6 +155,9 @@ menuentry 'Search ISOLINUX menu (AHCI)  [a]' --hotkey='a' {
 menuentry 'Search ISOLINUX menu (USB)  [u]' --hotkey='u' {
 	search_isolinux usb
 }
+menuentry 'Search ISOLINUX menu (ATA/IDE)  [d]' --hotkey='d' {
+	search_isolinux ata
+}
 menuentry 'Load test configuration (grubtest.cfg) inside of CBFS  [t]' --hotkey='t' {
 	set root='(cbfsdisk)'
 	if [ -f /grubtest.cfg ]; then