Added debug comment for bootloader selection

bootstrap-bookworm.sh

@@ -290,6 +290,7 @@ exit
 bootloader(){
 
 # Install grub in the mbr
+echo "$grubPkg selected as bootloader"
 if [ $partition="mbr-single" ]
 then
   chroot $mnt /bin/bash -c "grub-install $disk && update-grub"