fix: Diagnostics menu. Enhance disk selection dialog

Author: simonwalz

installer-factory/initramfs-tools/scripts/init-premount/cuos-installer

@@ -147,8 +147,9 @@ INNEREOF
   #else
     # shellcheck disable=SC2086
     target=$(dialog --clear --backtitle "Installer" \
-      --title "Select Target Disk" \
-      --radiolist "Select disk to overwrite:" 20 70 10 \
+      --title "Select Target Disk. The disk will be OVERWRITTEN." \
+      --no-cancel \
+      --radiolist "\nUse up/down keys, select with space key and hit enter:\n " 15 70 5 \
       $DISKS 3>&1 1>&2 2>&3)
     clear
   #fi

system/cuos/dialog-maintenance.sh

@@ -53,12 +53,12 @@ install_menu() {
       "System Installation" \
       "\nSelect an option:\n " \
       20 55 7 \
-      "${extra[@]}" \
+      "${extra[@]+"${extra[@]}"}" \
       "host" "Change Hostname: $(hostname -s)" \
       "net" "Configure Network${ipaddress:+": ${ipaddress}"}" \
       - " " \
       "act" "System Actions" \
-      "diagnostics_menu" "Diagnostics" \
+      "diag" "Diagnostics" \
       - " " \
       "exit" "\Z5Continue Installation\Z0")" || return 1
     case "$choice" in