Description of problem:
a) mageia 6 sta2 : drakboot (in drakxtools) in MCC can not show a choice to choose partition where you want to install the bootloader for Grub1 ou Lilo and use an other boot loader like the windows loader to boot and next load the Linux kernel.
b) mageia 6 sta2 : drakboot (in drakxtools) in MCC can not install the bootloader

Version-Release number of selected component (if applicable):
mageia 6 sta 2
drakxtools-curses-17.73-1

How reproducible:

Steps to Reproduce:
CASE 1 :
1.Launch drakboot in command line or via MCC
2.select grub with GUI or Lilo for software to use for booting
3.next in boot device, you can only choose /dev/sda for you harddisk or /dev/sdb for a usb key or DVD-Rom reader.
You can not choose, for example, /dev/sda5 where is your /boot partition.

CASE 2 :
ONLY after installing Lilo, I did
1.Launch drakboot in command line (I test with this solution) or via MCC
2.select grub with GUI or Lilo for software to use for booting
3.next in boot device entry, I select /dev/sdb for my usb key where is Mageia 6 files from DVD iso.
4.I click on the Next button
5.Then the drakboot window show all the entries for the bootloader, I click on the previous button.  
6. I choose grub with GUI for software to use for booting, AND now for the boot device entry, I have a scroll list where I can choose /dev/sda5 where is my /boot partition.
 
But with case 1 or case 2, I have the following problem 

[root@localhost ~]# drakboot
Too late to run INIT block at /usr/lib/perl5/vendor_perl/5.22.2/x86_64-linux-thread-multi/Glib/Object/Introspection.pm line 257.
Ignore the following Glib::Object::Introspection & Gtk3 warnings
Subroutine Gtk3::main redefined at /usr/lib/perl5/vendor_perl/5.22.2/Gtk3.pm line 525.

Note: This output shows SysV services only and does not include native
      systemd services. SysV configuration data might be overridden by native
      systemd configuration.

      If you want to list systemd services use 'systemctl list-unit-files'.
      To see services enabled on particular target use
      'systemctl list-dependencies [target]'.

Failed to enable unit: No such file or directory

Note: This output shows SysV services only and does not include native
      systemd services. SysV configuration data might be overridden by native
      systemd configuration.

      If you want to list systemd services use 'systemctl list-unit-files'.
      To see services enabled on particular target use
      'systemctl list-dependencies [target]'.



    GNU GRUB  version 0.97  (640K lower / 3072K upper memory)

 [ Minimal BASH-like line editing is supported.  For the first word, TAB
   lists possible command completions.  Anywhere else TAB lists the possible
   completions of a device/filename. ]
grub> root (hd0,5)
 Filesystem type is ext2fs, partition type 0x83
grub> setup --stage2=/boot/grub/stage2 (hd0,5)
 Checking if "/boot/grub/stage1" exists... no
 Checking if "/grub/stage1" exists... no

Error 14: Filesystem compatibility error, cannot read whole file
grub> quit
[root@localhost ~]#

Note : I have installed Mageia 6 sta 2 minimum installation with minimum packages + X server + docs + urpmi + IcewM for WM WITHOUT Plasma (KDE) and Gnome or others windows managers.
Next after first boot, I have installed task Plasma minimal by MCC in IceWM.

Crazy, now, I need to use a usb key to boot in Mageia 6 and not the windows boot loader.
I have several problems with Mageia 6 that I have not with Mageia 5.