grub-mkconfig n'a pu être exécuté avec succès. Vous devez le lancer en tant que root !

This message also appears if there's something wrong on your grub configuration.

Please run

sudo grub-mkconfig

using a terminal and tell me the error message.

Bonjour !

You were right...
I removed a menu entry in the custom file and it's running ok now.
For info I copy the result of the command you requested :

david@david-desktop:~$ sudo grub-mkconfig
[sudo] password for david:
Generating grub.cfg ...
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#

### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
  set have_grubenv=true
  load_env
fi
set default="0"
if [ "${prev_saved_entry}" ]; then
  set saved_entry="${prev_saved_entry}"
  save_env saved_entry
  set prev_saved_entry=
  save_env prev_saved_entry
  set boot_once=true
fi

function savedefault {
  if [ -z "${boot_once}" ]; then
    saved_entry="${chosen}"
    save_env saved_entry
  fi
}

function recordfail {
  set recordfail=1
  if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ]; then save_env recordfail; fi; fi
}

function load_video {
  insmod vbe
  insmod vga
}

insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set c7bb5555-5871-4813-84a8-b39beb76664f
if loadfont /usr/share/grub/unicode.pf2 ; then
  set gfxmode=640x480
  load_video
  insmod gfxterm
fi
terminal_output gfxterm
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set c7bb5555-5871-4813-84a8-b39beb76664f
set locale_dir=($root)/boot/grub/locale
set lang=fr
insmod gettext
if [ "${recordfail}" = 1 ]; then
  set timeout=-1
else
  set timeout=5
fi
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=white/black
set menu_color_highlight=black/light-gray
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/11_linux_xen ###
### END /etc/grub.d/11_linux_xen ###

### BEGIN /etc/grub.d/12_memtest86+ ###
Found memtest86+ image: /boot/memtest86+.bin
menuentry "Memory test (memtest86+)" {
 insmod part_msdos
 insmod ext2
 set root='(hd0,msdos1)'
 search --no-floppy --fs-uuid --set c7bb5555-5871-4813-84a8-b39beb76664f
 linux16 /boot/memtest86+.bin
}
menuentry "Memory test (memtest86+, serial console 115200)" {
 insmod part_msdos
 insmod ext2
 set root='(hd0,msdos1)'
 search --no-floppy --fs-uuid --set c7bb5555-5871-4813-84a8-b39beb76664f
 linux16 /boot/memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/12_memtest86+ ###

### BEGIN /etc/grub.d/15_custom ###
if [ -f $prefix/custom.cfg ]; then
  source $prefix/custom.cfg;
fi
/etc/grub.d/15_custom: 7: menuentry: not found
insmod: can't read 'loopback': No such file or directory
insmod: can't read 'iso9660': No such file or directory
/etc/grub.d/15_custom: 10: Syntax error: Unterminated quoted string
david@david-desktop:~$ ^C
david@david-desktop:~$

I wonder why all the files have changed names (new numbers) and there are now proxified scripts.

/etc/grub.d/bin
/etc/grub.d/proxifiedScripts
/etc/grub.d/00_header
/etc/grub.d/05_debian_theme
/etc/grub.d/10_linux_proxy
/etc/grub.d/11_linux_xen
/etc/grub.d/12_memtest86+
/etc/grub.d/13_os-prober_proxy
/etc/grub.d/14_custom_proxy
/etc/grub.d/15_custom
/etc/grub.d/README

here is the content of my proxifiedscripts folder :

/etc/grub.d/proxifiedScripts/custom
/etc/grub.d/proxifiedScripts/linux
/etc/grub.d/proxifiedScripts/os-prober

One more question : is there any way to modify the custom file of grub directly from your application (without editing it manually) ?

Thanks for your help.

To tell you frankly i tried a few things in grub-customizer to start an Elive distrib of linux that is not detected by os-prober. Maybe it's because the partition is formated in reiser...

Bye and thanks again.

Did you remove the tail command from the custom script? If you did so, grub-mkconfig tries to execute this suff as bash script instead of simply copying its contents to the grub.cfg.

Why the new numbers? -> this is the way to change the order of the scripts. When you're moving the scripts up or down using grub customizer, the prefixes will change. I wonder that it's completely renumbered - newer version of grub customizer are only switching the numbers of the two scripts you're switching in grub customizer.

why the proxified scripts? -> this is the way, grub customizer realizes the ability to edit the entries inside of a script. Instead of running the scripts directly there's a filter which executes one of the scripts and does some modification of the output before sending it back to the grub-mkconfig (through stdout).

Currently there's no way to edit the custom-file, but this is planned for version 3 (please don't expect this is coming out soon - there's still much to do...)

Thanks !
I will wait for the new version then.
You're doing a great job for the community.

May I suggest a correction about the dialog box above mentioned (since it has nothing to do with root permissions).

My problem is solved and I thank you again for that.

(By the way, I solved my problem with Elive distrib by reformating in ext3. It' now detected by os-prober.)

David from France.