I cannot disable os-prober MX23 [Solved]

[BitterTruth]

That is strange. Normally at the end of that you should get this warning:

Code: Select all

Warning: os-prober will not be executed to detect other bootable partitions.
Systems on them will not be added to the GRUB boot configuration.
Check GRUB_DISABLE_OS_PROBER documentation entry.

The warning is generated by /etc/grub.d/30_os-prober. Open your file manager and navigate to the file. Right click and choose open with geany/featherpad.

Take a look at the lines 43 to 59:

Code: Select all

if [ "x${GRUB_DISABLE_OS_PROBER}" = "xtrue" ]; then
  grub_warn "$(gettext_printf "os-prober will not be executed to detect other bootable partitions.\nSystems on them will not be added to the GRUB boot configuration.\nCheck GRUB_DISABLE_OS_PROBER documentation entry.")"
  exit 0
elif [ "x${GRUB_DISABLE_OS_PROBER}" = "xauto" ]; then
  # UBUNTU: We do not want to disable os-prober on upgrades if we found items before.
  if test -e /boot/grub/grub.cfg && ! grep -q osprober /boot/grub/grub.cfg; then
    grub_warn "$(gettext_printf "os-prober will not be executed to detect other bootable partitions.\nSystems on them will not be added to the GRUB boot configuration.\nCheck GRUB_DISABLE_OS_PROBER documentation entry.")"
    exit 0
  fi
fi

if ! command -v os-prober > /dev/null || ! command -v linux-boot-prober > /dev/null ; then
  # missing os-prober and/or linux-boot-prober
  exit 0
fi

grub_warn "$(gettext_printf "os-prober will be executed to detect other bootable partitions.\nIts output will be used to detect bootable binaries on them and create new boot entries.")"

Yours will probably say (mine does too):

Code: Select all

if [ "x${GRUB_DISABLE_OS_PROBER}" = "xtrue" ]; then
  exit 0
fi

That's why you're (and me) are not seeing any confirmation. My guess is OS-prober is disabled, just not telling you. If you want to check try enabling it and do sudo update-grub to see if output is generated. My bet is it will be

[fehlix]

That is strange. Normally at the end of that you should get this warning:

Code: Select all

Warning: os-prober will not be executed to detect other bootable partitions.
Systems on them will not be added to the GRUB boot configuration.
Check GRUB_DISABLE_OS_PROBER documentation entry.

Please don't get confused, we adjusted all those os-prober stuff a bit.
Let the OP first try the method described in the post above.
viewtopic.php?p=736357#p736357
Thanks

[BitterTruth]

grub_warn "$(gettext_printf "os-prober will not be executed to detect other bootable partitions.\nSystems on them will not be added to the GRUB boot configuration.\nCheck GRUB_DISABLE_OS_PROBER documentation entry.")"
exit 0
fi

This line is missing from his file. I think OS-Prober IS DISABLED. He is not getting a warning. That's all

[BitterTruth]

I just tested it because like the OP, I have Os prober disabled but do not get a warning when I do sudo update-grub. I checked on another machine and the warning is generated.
So, I just added the line to my file to print the warning if that condition is true and then I did sudo update-grub. Now I get the warning. This tells me that that if statement is TRUE and therefore the warning is printed to the screen.

@Byteria Please do you mind posting a copy of your /etc/grub.d/30_os-prober file or at least lines 43 -59.

[Byteria]

I just tested it because like the OP, I have Os prober disabled but do not get a warning when I do sudo update-grub. I checked on another machine and the warning is generated.
So, I just added the line to my file to print the warning if that condition is true and then I did sudo update-grub. Now I get the warning. This tells me that that if statement is TRUE and therefore the warning is printed to the screen.

@Byteria Please do you mind posting a copy of your /etc/grub.d/30_os-prober file or at least lines 43 -59.

Lines from 43 to 59 are not the same as yours, so it is better to post the entire file:

Code: Select all

#! /bin/sh

#tag for mx-system update
#mx-system 20.11.02+4

export LVM_SUPPRESS_FD_WARNINGS=true

if [ "x$(debconf-get-selections |grep  '^grub-pc\sgrub2/enable_os_prober\sboolean\strue' | awk '{print $4}')" = "xtrue" ]; then
   export GRUB_DISABLE_OS_PROBER="false"
fi

set -e


# grub-mkconfig helper script.
# Copyright (C) 2006,2007,2008,2009  Free Software Foundation, Inc.
#
# GRUB is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# GRUB is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GRUB.  If not, see <http://www.gnu.org/licenses/>.

prefix="/usr"
exec_prefix="/usr"
datarootdir="/usr/share"
quick_boot="0"

export TEXTDOMAIN=grub
export TEXTDOMAINDIR="${datarootdir}/locale"

. "$pkgdatadir/grub-mkconfig_lib"

found_other_os=

adjust_timeout () {
  if [ "$quick_boot" = 1 ] && [ "x${found_other_os}" != "x" ]; then
    cat << EOF
set timeout_style=menu
if [ "\${timeout}" = 0 ]; then
  set timeout=10
fi
EOF
  fi
}

if [ "x${GRUB_DISABLE_OS_PROBER}" = "xtrue" ]; then
  exit 0
fi

if [ -z "`which os-prober 2> /dev/null`" ] || [ -z "`which linux-boot-prober 2> /dev/null`" ] ; then
  # missing os-prober and/or linux-boot-prober
  exit 0
fi

OSPROBED="`os-prober | tr ' ' '^' | paste -s -d ' '`"
if [ -z "${OSPROBED}" ] ; then
  # empty os-prober output, nothing doing
  exit 0
fi

osx_entry() {
    found_other_os=1
    if [ x$2 = x32 ]; then
        # TRANSLATORS: it refers to kernel architecture (32-bit)
	bitstr="$(gettext "(32-bit)")"
    else
        # TRANSLATORS: it refers to kernel architecture (64-bit)
	bitstr="$(gettext "(64-bit)")"
    fi
    # TRANSLATORS: it refers on the OS residing on device %s
    onstr="$(gettext_printf "(on %s)" "${DEVICE}")"
        cat << EOF
menuentry '$(echo "${LONGNAME} $bitstr $onstr" | grub_quote)' --class osx --class darwin --class os \$menuentry_id_option 'osprober-xnu-$2-$(grub_get_device_id "${DEVICE}")'  {
EOF
	save_default_entry | grub_add_tab
	prepare_grub_to_access_device ${DEVICE} | grub_add_tab
	cat << EOF
        load_video
        set do_resume=0
        if [ /var/vm/sleepimage -nt10 / ]; then
           if xnu_resume /var/vm/sleepimage; then
             set do_resume=1
           fi
        fi
        if [ \$do_resume = 0 ]; then
           xnu_uuid ${OSXUUID} uuid
           if [ -f /Extra/DSDT.aml ]; then
              acpi -e /Extra/DSDT.aml
           fi
           if [ /kernelcache -nt /System/Library/Extensions ]; then
              $1 /kernelcache boot-uuid=\${uuid} rd=*uuid
           elif [ -f /System/Library/Kernels/kernel ]; then
              $1 /System/Library/Kernels/kernel boot-uuid=\${uuid} rd=*uuid
              xnu_kextdir /System/Library/Extensions
           else
              $1 /mach_kernel boot-uuid=\${uuid} rd=*uuid
              if [ /System/Library/Extensions.mkext -nt /System/Library/Extensions ]; then
                xnu_mkext /System/Library/Extensions.mkext
              else
                xnu_kextdir /System/Library/Extensions
              fi
           fi
           if [ -f /Extra/Extensions.mkext ]; then
              xnu_mkext /Extra/Extensions.mkext
           fi
           if [ -d /Extra/Extensions ]; then
              xnu_kextdir /Extra/Extensions
           fi
           if [ -f /Extra/devprop.bin ]; then
              xnu_devprop_load /Extra/devprop.bin
           fi
           if [ -f /Extra/splash.jpg ]; then
              insmod jpeg
              xnu_splash /Extra/splash.jpg
           fi
           if [ -f /Extra/splash.png ]; then
              insmod png
              xnu_splash /Extra/splash.png
           fi
           if [ -f /Extra/splash.tga ]; then
              insmod tga
              xnu_splash /Extra/splash.tga
           fi
        fi
}
EOF
}

used_osprober_linux_ids=

wubi=

for OS in ${OSPROBED} ; do
  DEVICE="`echo ${OS} | cut -d ':' -f 1`"
  LONGNAME="`echo ${OS} | cut -d ':' -f 2 | tr '^' ' '`"
  LABEL="`echo ${OS} | cut -d ':' -f 3 | tr '^' ' '`"
  BOOT="`echo ${OS} | cut -d ':' -f 4`"
  if UUID="`${grub_probe} --target=fs_uuid --device ${DEVICE%@*}`"; then
    EXPUUID="$UUID"

    if [ x"${DEVICE#*@}" != x ] ; then
      EXPUUID="${EXPUUID}@${DEVICE#*@}"
    fi

    if [ "x${GRUB_OS_PROBER_SKIP_LIST}" != "x" ] && [ "x`echo ${GRUB_OS_PROBER_SKIP_LIST} | grep -i -e '\b'${EXPUUID}'\b'`" != "x" ] ; then
      echo "Skipped ${LONGNAME} on ${DEVICE} by user request." >&2
      continue
    fi
  fi

  BTRFS="`echo ${OS} | cut -d ':' -f 5`"
  if [ "x$BTRFS" = "xbtrfs" ]; then
	BTRFSuuid="`echo ${OS} | cut -d ':' -f 6`"
	BTRFSsubvol="`echo ${OS} | cut -d ':' -f 7`"
  fi

  if [ -z "${LONGNAME}" ] ; then
    LONGNAME="${LABEL}"
  fi

  # os-prober returns text string followed by optional counter
  CLASS="--class $(echo "${LABEL}" | LC_ALL=C sed 's,[[:digit:]]*$,,' | cut -d' ' -f1 | tr 'A-Z' 'a-z' | LC_ALL=C sed 's,[^[:alnum:]_],_,g')"

  gettext_printf "Found %s on %s\n" "${LONGNAME}" "${DEVICE}" >&2

  case ${BOOT} in
    chain)

      case ${LONGNAME} in
	Windows*)
	  if [ -z "$wubi" ]; then
	    if [ -x /usr/share/lupin-support/grub-mkimage ] && \
	       /usr/share/lupin-support/grub-mkimage --test; then
	      wubi=yes
	    else
	      wubi=no
	    fi
	  fi
	  if [ "$wubi" = yes ]; then
	    echo "Skipping ${LONGNAME} on Wubi system" >&2
	    continue
	  fi
	  ;;
      esac

      found_other_os=1
	  onstr="$(gettext_printf "(on %s)" "${DEVICE}")"
      cat << EOF
menuentry '$(echo "${LONGNAME} $onstr" | grub_quote)' $CLASS --class os \$menuentry_id_option 'osprober-chain-$(grub_get_device_id "${DEVICE}")' {
EOF
      save_default_entry | grub_add_tab
      prepare_grub_to_access_device ${DEVICE} | grub_add_tab

      if [ x"`${grub_probe} --device ${DEVICE} --target=partmap`" = xmsdos ]; then
	  cat << EOF
	parttool \${root} hidden-
EOF
      fi

      case ${LONGNAME} in
	Windows\ Vista*|Windows\ 7*|Windows\ Server\ 2008*)
	;;
	*)
	  cat << EOF
	drivemap -s (hd0) \${root}
EOF
	;;
      esac

      cat <<EOF
	chainloader +1
}
EOF
    ;;
    efi)

	found_other_os=1
	EFIPATH=${DEVICE#*@}
	DEVICE=${DEVICE%@*}
	onstr="$(gettext_printf "(on %s)" "${DEVICE}")"
      cat << EOF
menuentry '$(echo "${LONGNAME} $onstr" | grub_quote)' $CLASS --class os \$menuentry_id_option 'osprober-efi-$(grub_get_device_id "${DEVICE}")' {
EOF
      save_default_entry | sed -e "s/^/\t/"
      prepare_grub_to_access_device ${DEVICE} | sed -e "s/^/\t/"

      cat <<EOF
	chainloader ${EFIPATH}
}
EOF
    ;;
    linux)
      if [ "x$BTRFS" = "xbtrfs" ]; then
         LINUXPROBED="`linux-boot-prober btrfs ${BTRFSuuid} ${BTRFSsubvol}  2> /dev/null | tr ' ' '^' | paste -s -d ' '`"
      else
         LINUXPROBED="`linux-boot-prober ${DEVICE} 2> /dev/null | tr ' ' '^' | paste -s -d ' '`"
      fi
      prepare_boot_cache=
      boot_device_id=
      is_top_level=true
      title_correction_code=
      OS="${LONGNAME}"

      for LINUX in ${LINUXPROBED} ; do
        LROOT="`echo ${LINUX} | cut -d ':' -f 1`"
        LBOOT="`echo ${LINUX} | cut -d ':' -f 2`"
        LLABEL="`echo ${LINUX} | cut -d ':' -f 3 | tr '^' ' '`"
        LKERNEL="`echo ${LINUX} | cut -d ':' -f 4`"
        LINITRD="`echo ${LINUX} | cut -d ':' -f 5  | tr '^' ' '`"
        LPARAMS="`echo ${LINUX} | cut -d ':' -f 6- | tr '^' ' '`"

        if [ -z "${LLABEL}" ] ; then
          LLABEL="${LONGNAME}"
        fi

	if [ "${LROOT}" != "${LBOOT}" ]; then
	  LKERNEL="${LKERNEL#/boot}"
	  LINITRD="${LINITRD#/boot}"
	fi

	if [ -z "${prepare_boot_cache}" ]; then
	  prepare_boot_cache="$(prepare_grub_to_access_device ${LBOOT} | grub_add_tab)"
	  [ "${prepare_boot_cache}" ] || continue
	fi

	found_other_os=1
	onstr="$(gettext_printf "(on %s)" "${DEVICE}")"
	recovery_params="$(echo "${LPARAMS}" | grep 'single\|recovery')" || true
	counter=1
	while echo "$used_osprober_linux_ids" | grep 'osprober-gnulinux-$LKERNEL-${recovery_params}-$counter-$boot_device_id' > /dev/null; do
	    counter=$((counter+1));
	done
	if [ -z "$boot_device_id" ]; then
	    boot_device_id="$(grub_get_device_id "${DEVICE}")"
	fi
	used_osprober_linux_ids="$used_osprober_linux_ids 'osprober-gnulinux-$LKERNEL-${recovery_params}-$counter-$boot_device_id'"

	if [ "x$is_top_level" = xtrue ] && [ "x${GRUB_DISABLE_SUBMENU}" != xy ]; then
            cat << EOF
menuentry '$(echo "$OS $onstr" | grub_quote)' $CLASS --class gnu-linux --class gnu --class os \$menuentry_id_option 'osprober-gnulinux-simple-$boot_device_id' {
EOF
	    save_default_entry | grub_add_tab
	    printf '%s\n' "${prepare_boot_cache}"
	    cat <<  EOF
	linux ${LKERNEL} ${LPARAMS}
EOF
            if [ -n "${LINITRD}" ] ; then
          cat << EOF
	initrd ${LINITRD}
EOF
            fi
        cat << EOF
}
EOF
	    echo "submenu '$(gettext_printf "Advanced options for %s" "${OS} $onstr" | grub_quote)' \$menuentry_id_option 'osprober-gnulinux-advanced-$boot_device_id' {"
	    is_top_level=false
	fi
	title="${LLABEL} $onstr"
        cat << EOF
	menuentry '$(echo "$title" | grub_quote)' --class gnu-linux --class gnu --class os \$menuentry_id_option 'osprober-gnulinux-$LKERNEL-${recovery_params}-$boot_device_id' {
EOF
	save_default_entry | sed -e "s/^/$grub_tab$grub_tab/"
	printf '%s\n' "${prepare_boot_cache}" | grub_add_tab
	cat <<  EOF
		linux ${LKERNEL} ${LPARAMS}
EOF
        if [ -n "${LINITRD}" ] ; then
            cat << EOF
		initrd ${LINITRD}
EOF
        fi
        cat << EOF
	}
EOF
	if [ x"$title" = x"$GRUB_ACTUAL_DEFAULT" ] || [ x"Previous Linux versions>$title" = x"$GRUB_ACTUAL_DEFAULT" ]; then
	    replacement_title="$(echo "Advanced options for ${OS} $onstr" | sed 's,>,>>,g')>$(echo "$title" | sed 's,>,>>,g')"
	    quoted="$(echo "$GRUB_ACTUAL_DEFAULT" | grub_quote)"
	    title_correction_code="${title_correction_code}if [ \"x\$default\" = '$quoted' ]; then default='$(echo "$replacement_title" | grub_quote)'; fi;"
	    grub_warn "$(gettext_printf "Please don't use old title \`%s' for GRUB_DEFAULT, use \`%s' (for versions before 2.00) or \`%s' (for 2.00 or later)" "$GRUB_ACTUAL_DEFAULT" "$replacement_title" "gnulinux-advanced-$boot_device_id>gnulinux-$version-$type-$boot_device_id")"
	fi
      done
      if [ x"$is_top_level" != xtrue ]; then
	  echo '}'
      fi
      echo "$title_correction_code"
    ;;
    macosx)
      if [ "${UUID}" ]; then
	OSXUUID="${UUID}"
	osx_entry xnu_kernel 32
	osx_entry xnu_kernel64 64
      fi
    ;;
    hurd)
      found_other_os=1
      onstr="$(gettext_printf "(on %s)" "${DEVICE}")"
      cat << EOF
menuentry '$(echo "${LONGNAME} $onstr" | grub_quote)' --class hurd --class gnu --class os \$menuentry_id_option 'osprober-gnuhurd-/boot/gnumach.gz-false-$(grub_get_device_id "${DEVICE}")' {
EOF
      save_default_entry | grub_add_tab
      prepare_grub_to_access_device ${DEVICE} | grub_add_tab
      grub_device="`${grub_probe} --device ${DEVICE} --target=drive`"
      mach_device="`echo "${grub_device}" | sed -e 's/(\(hd.*\),msdos\(.*\))/\1s\2/'`"
      grub_fs="`${grub_probe} --device ${DEVICE} --target=fs`"
      case "${grub_fs}" in
	*fs)	hurd_fs="${grub_fs}" ;;
	*)	hurd_fs="${grub_fs}fs" ;;
      esac
      cat << EOF
	multiboot /boot/gnumach.gz root=device:${mach_device}
	module /hurd/${hurd_fs}.static ${hurd_fs} --readonly \\
			--multiboot-command-line='\${kernel-command-line}' \\
			--host-priv-port='\${host-port}' \\
			--device-master-port='\${device-port}' \\
			--exec-server-task='\${exec-task}' -T typed '\${root}' \\
			'\$(task-create)' '\$(task-resume)'
	module /lib/ld.so.1 exec /hurd/exec '\$(exec-task=task-create)'
}
EOF
    ;;
    minix)
	  cat << EOF
menuentry "${LONGNAME} (on ${DEVICE}, Multiboot)" {
EOF
         save_default_entry | sed -e "s/^/\t/"
         prepare_grub_to_access_device ${DEVICE} | sed -e "s/^/\t/"
	 cat << EOF
	multiboot /boot/image_latest
}
EOF
    ;;
    *)
      # TRANSLATORS: %s is replaced by OS name.
      gettext_printf "%s is not yet supported by grub-mkconfig.\n" "  ${LONGNAME}" >&2
    ;;
  esac
done

adjust_timeout

[BitterTruth]

Thank you. I think we might have solved it. You need to

1) First make a backup of this file in your home directory
2) edit the original as sudo to add the warning if os prober is disabled
3) do update-grub to make sure the changes are applied and check for the warning
4) test by enabling/disabling os prober in /etc/default/grub

After you make the backup, find line 54/55 of your original file:

Code: Select all

if [ "x${GRUB_DISABLE_OS_PROBER}" = "xtrue" ]; then
  exit 0

Copy this

Code: Select all

grub_warn "$(gettext_printf "os-prober will not be executed to detect other bootable partitions.\nSystems on them will not be added to the GRUB boot configuration.\nCheck GRUB_DISABLE_OS_PROBER documentation entry.")"

and paste it above exit 0 so that it looks like this:

Code: Select all

if [ "x${GRUB_DISABLE_OS_PROBER}" = "xtrue" ]; then
  grub_warn "$(gettext_printf "os-prober will not be executed to detect other bootable partitions.\nSystems on them will not be added to the GRUB boot configuration.\nCheck GRUB_DISABLE_OS_PROBER documentation entry.")"
  exit 0

Save it. Do sudo update-grub. You should now see the warning at the end of the output.

Testing:

edit the /etc/default/grub:

GRUB_DISABLE_OS_PROBER="true" =======> false

sudo update-grub. There should be no warning.
Change back to true. Warning visible.

[Byteria]

os-prober is enabled by default, so

Code: Select all

GRUB_DISABLE_OS_PROBER=true
# if [ -e /etc/default/grub.mx-defaults ]; then
#      .  /etc/default/grub.mx-defaults
# fi

should do it I think.

Thank you, @dolphin_oracle -- It worked!

Code: Select all

changed in /etc/default/grub:
---------------------------------------------
#run dpkg-reconfigure grub-pc to allow toggle of os-prober
# GRUB_DISABLE_OS_PROBER=false

GRUB_DISABLE_OS_PROBER=true
# if [ -e /etc/default/grub.mx-defaults ]; then
#      .  /etc/default/grub.mx-defaults
# fi
GRUB_DISABLE_OS_PROBER=true
---------------------------------------------

$ date; sudo update-grub; date
Tue  1 Aug 19:58:34 -03 2023
Generating grub configuration file ...
Found theme: /boot/grub/themes/mx_linux/theme.txt
Found linux image: /boot/vmlinuz-6.1.0-10-amd64
Found initrd image: /boot/initrd.img-6.1.0-10-amd64
Found mtest-64.efi image: /boot/uefi-mt/mtest-64.efi
Adding boot menu entry for EFI firmware configuration
done
Tue  1 Aug 19:58:54 -03 2023

Topic split off. @Byteria your topic is here.

Thank you, @Eadwine Rose

Sorry, I took some time to understand it, and see other answers that I was not seeing.

Thank you all guys, who helped me with this.

[BitterTruth]

Hahaha. DOH! I can see it myself now as well. It's the way that parameter is worded. Confusing.

You have it disabled twice now. Not taking any chances :)

I still think that warning needs to be included to let someone know if os-prober has been enabled/disabled. I wonder who thought it was a good idea to remove it.

[Byteria]

Installed MX Linux 23 "Libretto" yesterday, then added to /etc/fstab the line /home from previous installation (MX 21) in order to keep previous user's configurations, and MX23 is working fine.

The only problem I have found so far, is that I cannot disable os-prober, anyway.

I did try "MX Tools >> Boot Options", , both "Yes" and "No", but it didn't disable os-prober.

In /etc/default/grub, I have set GRUB_DISABLE_OS_PROBER=true, then GRUB_DISABLE_OS_PROBER="true".

I have also edited /etc/default/grub.mx-defaults, and then renamed it to grub.mx-defaults.txt

Then, in /etc/default/grub, I have disabled all this block, still without results:

Code: Select all

# GRUB_DISABLE_OS_PROBER=true
# if [ -e /etc/default/grub.mx-defaults ]; then
#      .  /etc/default/grub.mx-defaults
# fi
# GRUB_DISABLE_OS_PROBER=true

I may suggest this:
Return the changes you made ( or may be keep them):
and run on the konsole this

Code: Select all

sudo debconf-set-selections <<<"grub-pc grub2/enable_os_prober boolean false"

followed by:

Code: Select all

sudo update-grub

would it still run os-prober?
Please try the above first and let us know, wehther this wokred.

Also after the above changes, you can revert the changes,
and try the "classical" way of disabling os-prober, which I think still works on Debian/bookworm,
which is just this:

Code: Select all

sudo chmod -x /etc/grub.d/30_os-prober

Please also let us know whether the classical way works for you.
Thanks

os-prober is enabled by default, so

Code: Select all

GRUB_DISABLE_OS_PROBER=true
# if [ -e /etc/default/grub.mx-defaults ]; then
#      .  /etc/default/grub.mx-defaults
# fi

should do it I think.

I think we may adjust something here, b/c if grub2/enable_os_prober is set to true
os-prober would still run.
Suggest we tweak our os-prober adjusments a bit,
A)* so it will always enable/disable os-prober run depending on the debconf settings are true/false.

and
B)* maybe we adjust the comments a bit if the user really wants to tweak by himself

and
C)* we should consider to keep the current grub-live file in sync with /etc/grub.d,
which currently is not in resp. to os-prober (may be after A and B). Otherwise user installed from snapshot,
may wonder about this different ways of disabling os-prober.

Just in order to be exact...

I did try "MX Tools >> Boot Options", , both "Yes" and "No", but it didn't disable os-prober.

Really, not. What I had done, was running "sudo dpkg-reconfigure grub-pc", with both "Yes" and "No" in the little window that opened.

Before solving the problem, I did also run sudo debconf-set-selections <<<"grub-pc grub2/enable_os_prober boolean false" (after reverting previous changes), which didn't solve it, but I don't know what changed with this, or if it may contributed to solve later.

I did try sudo chmod -x /etc/grub.d/30_os-prober, too... but I didn't test after this, because I have seen other answers, which I had lost until back then.

You have it disabled twice now. Not taking any chances :)

Here we call it "surround the animal on all sides".

[fehlix]

What I had done, was running "sudo dpkg-reconfigure grub-pc", with both "Yes" and "No" in the little window that opened.

Before solving the problem, I did also run sudo debconf-set-selections <<<"grub-pc grub2/enable_os_prober boolean false" (after reverting previous changes), which didn't solve it, but I don't know what changed with this, or if it may contributed to solve later.

I guess, it may have been a bit added some confusion, changing on to many different places...
When you run:

Code: Select all

sudo dpkg-reconfigure grub-pc

It may need to run twice, b/c the update-grub run triggers os-prober, which may take the old true or false
from debconf, b/c dpkg-reconfigure grub-pc might only set the value after the run was finished.
You can check, the change of true or false with:

Code: Select all

sudo debconf-get-selections | grep grub2/enable_os_prober