GRUB2 Menuentry

-> placeholder: $1 is Linux partition UUID; $2 is EFI UUID

-> menuentry templates

menuentry 'Arch Linux' --class arch --class gnu-linux --class gnu --class os {
  load_video
  set gfxpayload=keep
  insmod gzio
  insmod part_gpt
  insmod ext2
  search --no-floppy --fs-uuid --set=root $1
  echo 'Welcome to Arch Linux!'
  linux /boot/vmlinuz-linux root=UUID=$1 rw loglevel=3
  initrd /boot/initramfs-linux.img
}
menuentry 'Microsoft Windows 10' --class windows --class os {
  insmod part_gpt
  insmod fat
  search --no-floppy --fs-uuid --set=root $2
  chainloader /EFI/Microsoft/Boot/bootmgfw.efi
}