my Intel NUC Kit NUC8I5BEK use one ssd to install three OS in one grub env

├─APDATA-Manjaro 254:0 0 15.9G 0 lvm /
├─APDATA-Debian 254:1 0 50G 0 lvm
└─APDATA-CentOS 254:2 0 50G 0 lvm

menuentry 'Manjaro Linux' --class manjaro --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-73ea5634-f666-4db0-99f9-0b740f558032' {
savedefault
load_video
set gfxpayload=keep
insmod gzio
insmod part_gpt
insmod ext2
set root='hd0,gpt2'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-ieee1275='ieee1275/(null)/sas/disk@0,gpt2' --hint-bios=hd0,gpt2 --hint-efi=hd0,gpt2 --hint-baremetal=ahci0,gpt2 84468a22-389b-4378-8bac-9d70b66b95f7
else
search --no-floppy --fs-uuid --set=root 84468a22-389b-4378-8bac-9d70b66b95f7
fi
linux /vmlinuz-5.6-x86_64 root=/dev/mapper/APDATA-Manjaro rw quiet apparmor=1 security=apparmor udev.log_priority=3
initrd /intel-ucode.img /initramfs-5.6-x86_64.img

}

menuentry 'Debian GNU/Linux 10 (buster) (on /dev/mapper/APDATA-Debian)' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-simple-fa7ee83c-88d7-4d44-bc67-8df978e4e3f4' {
savedefault
insmod part_gpt
insmod ext2
set root='hd0,gpt2'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-ieee1275='ieee1275/(null)/sas/disk@0,gpt2' --hint-bios=hd0,gpt2 --hint-efi=hd0,gpt2 --hint-baremetal=ahci0,gpt2 84468a22-389b-4378-8bac-9d70b66b95f7
else
search --no-floppy --fs-uuid --set=root 84468a22-389b-4378-8bac-9d70b66b95f7
fi
echo 'Loading Linux 5.6.3-050603-lowlatency ...'
linux /vmlinuz-5.6.3-050603-lowlatency root=/dev/mapper/APDATA-Debian ro quiet
echo 'Loading initial ramdisk ...'
initrd /initrd.img-5.6.3-050603-lowlatency
}

menuentry 'CentOS Linux 8 (Core) (on /dev/mapper/APDATA-CentOS)' --class centos --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-simple-c4f8c354-d62c-42c9-8bcd-432ca2aa580a' {
savedefault
insmod part_gpt
insmod ext2
set root='hd0,gpt2'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-ieee1275='ieee1275/(null)/sas/disk@0,gpt2' --hint-bios=hd0,gpt2 --hint-efi=hd0,gpt2 --hint-baremetal=ahci0,gpt2 84468a22-389b-4378-8bac-9d70b66b95f7
else
search --no-floppy --fs-uuid --set=root 84468a22-389b-4378-8bac-9d70b66b95f7
fi
linux /vmlinuz-4.18.0-147.5.1.el8_1.x86_64 root=/dev/mapper/APDATA-CentOS rw quiet apparmor=1 security=apparmor udev.log_priority=3
initrd /initramfs-4.18.0-147.5.1.el8_1.x86_64.img
}

:thinking: :question:

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