Mint_Root_partition_modification/etc/grub.d/40_custom

#!/bin/sh
exec tail -n +3 $0
# 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.

menuentry "リアルタイム環境" {
 set isofile="/@home/cheyan/Documents/ISO/linuxmint-cinnamon-64bit-edge.iso"
 loopback loop (hd0,gpt3)/$isofile
 linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=$isofile quiet noeject nopromt spalsh --
 initrd (loop)/casper/initrd.lz
}

#menuentry "Windows PE" {
#  set isofile="/@home/cheyan/Documents/ISO/windows-pe.iso"
#  loopback loop (hd0,gpt3)/$isofile
#  iso9660_module (loop)
#  set root=(loop)
#  chainloader (loop)/EFI/boot/bootx64.efi
#}
#
#menuentry "Windows PE2" {
#  set isofile="/@home/cheyan/Documents/ISO/windows-pe.iso"
#  linux16 (hd0,gpt3)/@home/cheyan/Documents/ISO/memdisk iso
#  initrd16 (hd0,gpt3)$isofile
#}
#
#menuentry "Windows PE3" {
#  set isofile="/@home/cheyan/Documents/ISO/windows-pe.iso"
#  linux16 /@home/cheyan/Documents/ISO/memdisk iso
#  initrd16 (hd0,gpt3)$isofile
#}