Memtest86 not showing in grub

General system
1

I remember having an entry for memtest in the past but after altering bios to uefi it seems to have gone.
It is still installed though.

I reinstalled memtest and regenerated grub to no avail.

This is my grub.cfg and it seems to be in it.

#
# 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 ###
insmod part_gpt
insmod part_msdos
if [ -s $prefix/grubenv ]; then
  load_env
fi
if [ "${next_entry}" ] ; then
   set default="${next_entry}"
   set next_entry=
   save_env next_entry
   set boot_once=true
else
   set default="${saved_entry}"
fi

if [ x"${feature_menuentry_id}" = xy ]; then
  menuentry_id_option="--id"
else
  menuentry_id_option=""
fi

export menuentry_id_option

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 load_video {
  if [ x$feature_all_video_module = xy ]; then
    insmod all_video
  else
    insmod efi_gop
    insmod efi_uga
    insmod ieee1275_fb
    insmod vbe
    insmod vga
    insmod video_bochs
    insmod video_cirrus
  fi
}

if [ x$feature_default_font_path = xy ] ; then
   font=unicode
else
insmod part_gpt
insmod ext2
set root='hd0,gpt1'
if [ x$feature_platform_search_hint = xy ]; then
  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt1 --hint-efi=hd0,gpt1 --hint-baremetal=ahci0,gpt1  6dcee954-bc8a-4034-86f5-189bf448289a
else
  search --no-floppy --fs-uuid --set=root 6dcee954-bc8a-4034-86f5-189bf448289a
fi
    font="/usr/share/grub/unicode.pf2"
fi

if loadfont $font ; then
  set gfxmode=1366x768
  load_video
  insmod gfxterm
  set locale_dir=$prefix/locale
  set lang=nl_NL
  insmod gettext
fi
terminal_input console
terminal_output gfxterm
insmod part_gpt
insmod ext2
set root='hd0,gpt1'
if [ x$feature_platform_search_hint = xy ]; then
  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt1 --hint-efi=hd0,gpt1 --hint-baremetal=ahci0,gpt1  6dcee954-bc8a-4034-86f5-189bf448289a
else
  search --no-floppy --fs-uuid --set=root 6dcee954-bc8a-4034-86f5-189bf448289a
fi
insmod gfxmenu
loadfont ($root)/boot/grub/themes/EndeavourOS/unifont-regular-16.pf2
insmod png
set theme=($root)/boot/grub/themes/EndeavourOS/theme.txt
export theme
if [ x$feature_timeout_style = xy ] ; then
  set timeout_style=menu
  set timeout=2
# Fallback normal timeout code in case the timeout_style feature is
# unavailable.
else
  set timeout=2
fi
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/10_linux ###
menuentry 'EndeavourOS Linux, with Linux linux-lts54' --class endeavouros --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-linux-lts54-advanced-6dcee954-bc8a-4034-86f5-189bf448289a' {
	savedefault
	load_video
	set gfxpayload=keep
	insmod gzio
	insmod part_gpt
	insmod ext2
	set root='hd0,gpt1'
	if [ x$feature_platform_search_hint = xy ]; then
	  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt1 --hint-efi=hd0,gpt1 --hint-baremetal=ahci0,gpt1  6dcee954-bc8a-4034-86f5-189bf448289a
	else
	  search --no-floppy --fs-uuid --set=root 6dcee954-bc8a-4034-86f5-189bf448289a
	fi
	echo	'Loading Linux linux-lts54 ...'
	linux	/boot/vmlinuz-linux-lts54 root=UUID=6dcee954-bc8a-4034-86f5-189bf448289a rw  intel_idle.max_cstate=1 intel_iommu=off resume=UUID=31fc204a-f877-4128-b63f-ac70b0d5312e loglevel=3 pci=nocrs
	echo	'Loading initial ramdisk ...'
	initrd	/boot/intel-ucode.img /boot/initramfs-linux-lts54.img
}
menuentry 'EndeavourOS Linux, with Linux linux-lts54 (fallback initramfs)' --class endeavouros --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-linux-lts54-fallback-6dcee954-bc8a-4034-86f5-189bf448289a' {
	savedefault
	load_video
	set gfxpayload=keep
	insmod gzio
	insmod part_gpt
	insmod ext2
	set root='hd0,gpt1'
	if [ x$feature_platform_search_hint = xy ]; then
	  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt1 --hint-efi=hd0,gpt1 --hint-baremetal=ahci0,gpt1  6dcee954-bc8a-4034-86f5-189bf448289a
	else
	  search --no-floppy --fs-uuid --set=root 6dcee954-bc8a-4034-86f5-189bf448289a
	fi
	echo	'Loading Linux linux-lts54 ...'
	linux	/boot/vmlinuz-linux-lts54 root=UUID=6dcee954-bc8a-4034-86f5-189bf448289a rw  intel_idle.max_cstate=1 intel_iommu=off resume=UUID=31fc204a-f877-4128-b63f-ac70b0d5312e loglevel=3 pci=nocrs
	echo	'Loading initial ramdisk ...'
	initrd	/boot/initramfs-linux-lts54-fallback.img
}
menuentry 'EndeavourOS Linux, with Linux linux' --class endeavouros --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-linux-advanced-6dcee954-bc8a-4034-86f5-189bf448289a' {
	savedefault
	load_video
	set gfxpayload=keep
	insmod gzio
	insmod part_gpt
	insmod ext2
	set root='hd0,gpt1'
	if [ x$feature_platform_search_hint = xy ]; then
	  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt1 --hint-efi=hd0,gpt1 --hint-baremetal=ahci0,gpt1  6dcee954-bc8a-4034-86f5-189bf448289a
	else
	  search --no-floppy --fs-uuid --set=root 6dcee954-bc8a-4034-86f5-189bf448289a
	fi
	echo	'Loading Linux linux ...'
	linux	/boot/vmlinuz-linux root=UUID=6dcee954-bc8a-4034-86f5-189bf448289a rw  intel_idle.max_cstate=1 intel_iommu=off resume=UUID=31fc204a-f877-4128-b63f-ac70b0d5312e loglevel=3 pci=nocrs
	echo	'Loading initial ramdisk ...'
	initrd	/boot/intel-ucode.img /boot/initramfs-linux.img
}
menuentry 'EndeavourOS Linux, with Linux linux (fallback initramfs)' --class endeavouros --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-linux-fallback-6dcee954-bc8a-4034-86f5-189bf448289a' {
	savedefault
	load_video
	set gfxpayload=keep
	insmod gzio
	insmod part_gpt
	insmod ext2
	set root='hd0,gpt1'
	if [ x$feature_platform_search_hint = xy ]; then
	  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,gpt1 --hint-efi=hd0,gpt1 --hint-baremetal=ahci0,gpt1  6dcee954-bc8a-4034-86f5-189bf448289a
	else
	  search --no-floppy --fs-uuid --set=root 6dcee954-bc8a-4034-86f5-189bf448289a
	fi
	echo	'Loading Linux linux ...'
	linux	/boot/vmlinuz-linux root=UUID=6dcee954-bc8a-4034-86f5-189bf448289a rw  intel_idle.max_cstate=1 intel_iommu=off resume=UUID=31fc204a-f877-4128-b63f-ac70b0d5312e loglevel=3 pci=nocrs
	echo	'Loading initial ramdisk ...'
	initrd	/boot/initramfs-linux-fallback.img
}

### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###

### BEGIN /etc/grub.d/30_os-prober ###
### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries.  Simply type the
# menu entries you want to add after this comment.  Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###

### BEGIN /etc/grub.d/41_custom ###
if [ -f  ${config_directory}/custom.cfg ]; then
  source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f  $prefix/custom.cfg ]; then
  source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###

### BEGIN /etc/grub.d/60_memtest86+ ###
if [ "${grub_platform}" == "pc" ]; then
    menuentry "Memory Tester (memtest86+)" --class memtest86 --class gnu --class tool {
        search --fs-uuid --no-floppy --set=root --hint-bios=hd0,gpt1 --hint-efi=hd0,gpt1 --hint-baremetal=ahci0,gpt1  6dcee954-bc8a-4034-86f5-189bf448289a
        linux16 /boot/memtest86+/memtest.bin 
    }
fi
### END /etc/grub.d/60_memtest86+ ###

Regenerating grub:

Generating grub configuration file ...
Found theme: /boot/grub/themes/EndeavourOS/theme.txt
Found linux image: /boot/vmlinuz-linux-lts54
Found initrd image: /boot/intel-ucode.img /boot/initramfs-linux-lts54.img
Found fallback initrd image(s) in /boot: initramfs-linux-lts54-fallback.img
Found linux image: /boot/vmlinuz-linux
Found initrd image: /boot/intel-ucode.img /boot/initramfs-linux.img
Found fallback initrd image(s) in /boot: initramfs-linux-fallback.img
Found memtest86+ image: /boot/memtest86+/memtest.bin
done

I’m sure I miss something but what?

2

This:

if [ "${grub_platform}" == "pc" ]; then
    menuentry "Memory Tester (memtest86+)" --class memtest86 --class gnu --class tool {
        search --fs-uuid --no-floppy --set=root --hint-bios=hd0,gpt1 --hint-efi=hd0,gpt1 --hint-baremetal=ahci0,gpt1  6dcee954-bc8a-4034-86f5-189bf448289a
        linux16 /boot/memtest86+/memtest.bin 
    }
fi

Means that it is only available in a BIOS/legacy install. pc is the alternative to efi in this case.

The reason for that is probably that unless something has changed, memtest86+ doesn’t support UEFI. There is a free version of memtest that supports UEFI but I don’t believe it is fully open source.

3

Okay, thanks Dalto.

1 Like
4

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