Question

31

How can I add the Memtest86+ options back to the Grub menu?

rated 0 times [ 31] [ 0] / answers: 1 / hits: 101602 / 1 Year ago, sun, december 25, 2022, 9:26:21

If using UEFI Please see this question, "Can I boot memtest86+ if I'm using UEFI?"

After having installed the 64bit version of Ubuntu 12.04 on my Lenovo B570 I ran into the same problems I had when installing 11.10 with Grub not playing nicely with a uEFI system. I used the same technique as last time to solve the problem (using a Super Grub Disc LiveCD session to repair Grub) and my system happily dual boots between Ubuntu and Windows 7

However now when I boot up the Grub menu only displays

Ubuntu, with Linux 3.2.0-24-generic

Ubuntu, with Linux 3.2.0-24-generic (recovery mode)

Previous Linux versions

Windows 7 (loader) (on /dev/sda1)

Windows Recovery Environment (loader) (on /dev/sda4)

I no longer see the option to use Memtest86+ which was there previously, having checked in the Ubuntu Software Center I can see that the package is installed, but how to I make the option to run it once again appear in the Grub menu?

I've tried:

sudo update-grub

which doesn't make any difference.

sudo chmod +x /etc/grub.d/20_memtest86+

results in:

chmod: cannot access /etc/grub.d/20_memtest86+': No such file or directory

and entering

ls /etc/grub.d/

results in:

00_header        10_linux      30_os-prober  41_custom

05_debian_theme  20_linux_xen  40_custom     README

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answered 1 Year ago fenddy · Accepted Answer

Try opening a terminal and running

sudo chmod +x /etc/grub.d/20_memtest86+

sudo update-grub

Check to see if it's there

grep memtest /boot/grub/grub.cfg

Just done the same as I had it disabled

hob@hob-HP-dx5150-MT:~$ cat /boot/grub/grub.cfg |grep memtest

hob@hob-HP-dx5150-MT:~$ sudo chmod +x /etc/grub.d/20_memtest86+

[sudo] password for hob: 

hob@hob-HP-dx5150-MT:~$ sudo update-grub

Generating grub.cfg ...

Found linux image: /boot/vmlinuz-3.2.0-24-generic

Found initrd image: /boot/initrd.img-3.2.0-24-generic

Found linux image: /boot/vmlinuz-3.2.0-23-generic

Found initrd image: /boot/initrd.img-3.2.0-23-generic

Found memtest86+ image: /boot/memtest86+.bin

Found Ubuntu 11.10 (11.10) on /dev/sda6

Found Trisquel 5.5 (5.5) on /dev/sda8

Found Ubuntu 12.04 LTS (12.04) on /dev/sda9

done

hob@hob-HP-dx5150-MT:~$ cat /boot/grub/grub.cfg |grep memtest

### BEGIN /etc/grub.d/20_memtest86+ ###

menuentry "Memory test (memtest86+)" {

    linux16 /boot/memtest86+.bin

menuentry "Memory test (memtest86+, serial console 115200)" {

    linux16 /boot/memtest86+.bin console=ttyS0,115200n8

### END /etc/grub.d/20_memtest86+ ###

You could try creating the file if it's not there, using nano in a terminal

sudo nano /etc/grub.d/20_memtest86+

or with a gui editor

gksudo gedit /etc/grub.d/20_memtest86+

Fill it with

#!/bin/sh

set -e



if [ -f /usr/lib/grub/grub-mkconfig_lib ]; then

  . /usr/lib/grub/grub-mkconfig_lib

  LX=linux16

elif [ -f /usr/lib/grub/update-grub_lib ]; then

  . /usr/lib/grub/update-grub_lib

  LX=linux

else

  # no grub file, so we notify and exit gracefully

  echo "Cannot find grub config file, exiting." >&2

  exit 0

fi



# We can't cope with loop-mounted devices here.

case ${GRUB_DEVICE_BOOT} in

  /dev/loop/*|/dev/loop[0-9]) exit 0 ;;

esac



prepare_boot_cache="$(prepare_grub_to_access_device ${GRUB_DEVICE_BOOT} | sed -e "s/^/	/")"



if test -e /boot/memtest86+.bin ; then

  MEMTESTPATH=$( make_system_path_relative_to_its_root "/boot/memtest86+.bin" )

  echo "Found memtest86+ image: $MEMTESTPATH" >&2

  cat << EOF

menuentry "Memory test (memtest86+)" {

EOF

  printf '%s

' "${prepare_boot_cache}"

  cat << EOF

    $LX $MEMTESTPATH

}

menuentry "Memory test (memtest86+, serial console 115200)" {

EOF

  printf '%s

' "${prepare_boot_cache}"

  cat << EOF

    $LX $MEMTESTPATH console=ttyS0,115200n8

}

EOF

fi



#if test -e /boot/memtest86+_multiboot.bin ; then

#  MEMTESTPATH=$( make_system_path_relative_to_its_root "/boot/memtest86+_multiboot.bin" )

#  echo "Found memtest86+ multiboot image: $MEMTESTPATH" >&2

#  cat << EOF

#menuentry "Memory test (memtest86+, experimental multiboot)" {

#EOF

#  printf '%s

' "${prepare_boot_cache}"

#  cat << EOF

#   multiboot   $MEMTESTPATH

#}

#menuentry "Memory test (memtest86+, serial console 115200, experimental multiboot)" {

#EOF

#  printf '%s

' "${prepare_boot_cache}"

#  cat << EOF

#   multiboot   $MEMTESTPATH console=ttyS0,115200n8

#}

#EOF

#fi

Make sure to run the chmod +x command on it afterwards.

I'd be a bit concerned that it's missing though - do you have everything else in grub.d ?

ls /etc/grub.d/





00_header        10_linux.bak       20_memtest86+  41_custom

05_debian_theme  10_linux.dpkg-old  30_os-prober   README

10_linux         20_linux_xen       40_custom