Update install.sh

install.sh

@@ -307,7 +307,13 @@ updating_grub() {
   elif has_command zypper; then
     grub2-mkconfig -o /boot/grub2/grub.cfg
   elif has_command dnf; then
-    grub2-mkconfig -o /boot/grub2/grub.cfg || grub2-mkconfig -o /boot/efi/EFI/fedora/grub.cfg
+    if [[ -f /boot/efi/EFI/fedora/grub.cfg ]]; then
+      prompt -i "Find config file on /boot/efi/EFI/fedora/grub.cfg ...\n"
+      grub2-mkconfig -o /boot/efi/EFI/fedora/grub.cfg
+    elif [[ -f /boot/grub2/grub.cfg ]]; then
+      prompt -i "Find config file on /boot/grub2/grub.cfg ...\n"
+      grub2-mkconfig -o /boot/grub2/grub.cfg
+    fi
   fi
 
   # Success message