Update grub config

Author: bigbruno

biglinux-make-iso-profiles/base/live-overlay/usr/share/grub/cfg/grub.cfg

@@ -1,6 +1,6 @@
 # BigLinux live GRUB configuration
-# UI language is intentionally neutral here; locale and keyboard selection are
-# handled by the graphical setup wizard after boot.
+# Locale, keyboard and timezone are selected by the graphical setup wizard
+# after boot, so this menu does not expose locale-selection controls.
 
 insmod font
 insmod part_msdos
@@ -15,70 +15,6 @@ function menu_reload {
     configfile /boot/grub/grub.cfg
 }
 
-function is_efi {
-    if [ "${grub_platform}" = "efi" ]; then
-        return 0
-    fi
-    return 1
-}
-
-function efi_detect {
-    if is_efi; then
-        insmod chain
-        submenu "Detect EFI bootloaders" --class=efi --hotkey=f {
-            set efi_found=false
-
-            for efi in \
-                (*,gpt*)/efi/*/*.efi \
-                (*,gpt*)/efi/*/*/*.efi \
-                (*,gpt*)/*.efi \
-                (*,gpt*)/*/*.efi \
-                (*,msdos*)/efi/*/*.efi \
-                (*,msdos*)/efi/*/*/*.efi \
-                (*,msdos*)/*.efi \
-                (*,msdos*)/*/*.efi; do
-                if [ -e "${efi}" ]; then
-                    regexp --set=1:efi_device '^\((.*)\)/' "${efi}"
-                    set efi_found=true
-                    menuentry "${efi}" --class=efi "${efi_device}" {
-                        set root="${2}"
-                        chainloader "${1}"
-                    }
-                fi
-            done
-
-            if [ "${efi_found}" != "true" ]; then
-                menuentry "No EFI files detected" --class=safe {
-                    menu_reload
-                }
-            fi
-        }
-    fi
-}
-
-function memtest_detect {
-    if is_efi; then
-        if [ -f /boot/memtest-efi ]; then
-            insmod chain
-            menuentry "Run memory test" --class=memtest {
-                chainloader /boot/memtest-efi
-            }
-        fi
-    else
-        if [ -f /boot/memtest ]; then
-            menuentry "Run memory test" --class=memtest {
-                linux16 /boot/memtest
-            }
-        fi
-    fi
-}
-
-function grub_reboot {
-    menuentry "Restart computer" --class=restart {
-        reboot
-    }
-}
-
 # Load local defaults first, but retain safe built-in fallbacks if a source
 # package is incomplete.
 if [ -f /boot/grub/variable.cfg ]; then
@@ -100,16 +36,14 @@ if [ -z "${default}" ]; then
     set default=0
 fi
 
-# The theme deliberately uses a solid color rather than a full-screen image.
-# That avoids large PNG decoding/scaling in firmware with limited video memory.
-# A generic Unicode font may still enable gfxterm, but the custom theme is only
-# activated when its own Terminus font is available.
+# The theme uses a solid color rather than a full-screen image. This avoids
+# decoding or scaling a large background on firmware with limited video memory.
+# The attached Terminus Bold 22 font is the primary and only theme font.
 set gfx_ready=false
 set theme_ready=false
-if loadfont /boot/grub/themes/biglinux-live/terminus-16.pf2; then
+if loadfont /boot/grub/themes/biglinux-live/ter-u22b.pf2; then
     set gfx_ready=true
     set theme_ready=true
-    loadfont /boot/grub/themes/biglinux-live/terminus-14.pf2
 elif [ -f /boot/grub/unicode.pf2 ]; then
     if loadfont /boot/grub/unicode.pf2; then
         set gfx_ready=true
@@ -156,15 +90,9 @@ export kopts
 export auto
 export clinput
 
+# kernels.cfg also acts as the menu dispatcher. Nested menus are opened with
+# a nested normal-mode instance, allowing an explicit first "Back" entry to
+# return exactly one level through normal_exit.
+set biglinux_menu="root"
+export biglinux_menu
 source /boot/grub/kernels.cfg
-
-if [ -n "${clinput}" ]; then
-    menuentry "Clear extra boot parameters" --class=edit {
-        unset clinput
-        menu_reload
-    }
-fi
-
-efi_detect
-memtest_detect
-grub_reboot