Extending Grub2 to detect Memtest+

Grub2 using Gentoo doesn’t detect if a Memtest86+ boot image is available - so I tried to come up with a solution which looks as follows:

20_memtest86+:

#! /bin/sh set -e

grub-mkconfig helper script.

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it under the terms of the GNU General Public License as published by

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GRUB is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

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prefix=/usr exec_prefix=${prefix} bindir=/bin libdir=/lib64 datarootdir=${prefix}/share

. ${libdir}/grub/grub-mkconfig_lib

MEMTEST86_IMAGE=“/boot/memtest86plus/memtest.bin” CLASS=“–class memtest86 –class gnu –class tool”

if [ -e $MEMTEST86_IMAGE ] && is_path_readable_by_grub $MEMTEST86_IMAGE; then

image exists, create menu entry

echo “Found memtest86+ image: $MEMTEST86_IMAGE” >&2 cat << EOF

menuentry “Memory test (memtest86+)” $CLASS { EOF prepare_grub_to_access_device ${grub_probe} --target=device $MEMTEST86_IMAGE | sed -e “s/^/ /” cat << EOF linux16 ($root)make_system_path_relative_to_its_root $MEMTEST86_IMAGE } EOF fi