Fix the menu entry "Search for GRUB configuration"

On at least the MacBook2,1 the "Search..." menu entry
couldn't load existing configuration files, for example
that of the GuixSD USB installer. This commit reverts
a part of ee9f1bd4dc64786026c34267919441266c49c039.

1 files changed, 33 insertions, 13 deletions

diff --git a/resources/grub/config/menuentries/common.cfg b/resources/grub/config/menuentries/common.cfg
index 63f57ac3..980a1a59 100644
--- a/resources/grub/config/menuentries/common.cfg
+++ b/resources/grub/config/menuentries/common.cfg
@@ -104,19 +104,39 @@ menuentry 'Switch to grubtest.cfg  [t]' --hotkey='t' {
 	configfile /grubtest.cfg
 }
 menuentry 'Search for GRUB configuration (grub.cfg) outside of CBFS  [s]' --hotkey='s' {
-	for i in usb0 usb1 ahci0; do
-		for j in 1 2 3 4 5 6 7 8 9; do
-			x=${i},${j}
-			for p in "grub" "boot/grub" "grub2" "boot/grub2"; do
-				if [ -f "${x}/${p}/grub.cfg" ]; then
-					submenu "Load Config from ${x}" ${x} {
-						root=$2
-						source /${p}/grub.cfg
-						unset superusers
-					}
-				fi
-			done
-		done
+	insmod ahci
+	insmod usbms
+	insmod part_msdos
+	insmod part_gpt
+	for x in (ahci0,1) (ahci0,2) (ahci0,3) (ahci0,4) (usb0) (usb0,1) (usb0,2) (usb0,3) (usb0,4); do
+		if [ -f "$x/grub/grub.cfg" ] ; then
+			submenu "Load Config from $x" $x { 
+				root=$2
+				source /grub/grub.cfg
+				unset superusers
+			}
+		fi
+		if [ -f "$x/boot/grub/grub.cfg" ] ; then
+			submenu "Load Config from $x" $x {
+				root=$2
+				source /boot/grub/grub.cfg
+				unset superusers
+			}
+		fi
+		if [ -f "$x/grub2/grub.cfg" ] ; then
+			submenu "Load Config from $x" $x { 
+				root=$2
+				source /grub2/grub.cfg
+				unset superusers
+			}
+		fi
+		if [ -f "$x/boot/grub2/grub.cfg" ] ; then
+			submenu "Load Config from $x" $x {
+				root=$2
+				source /boot/grub2/grub.cfg
+				unset superusers
+			}
+		fi
 	done
 }
 menuentry 'Poweroff  [p]' --hotkey='p' {