set prefix=(memdisk)/boot/grub

terminal_input --append at_keyboard
terminal_output --append cbmemc
terminal_output --append gfxterm
gfxpayload=keep

loadfont (memdisk)/boot/grub/fonts/dejavusansmono.pf2
keymap usqwerty

set pager=1
set default=0
set timeout=2

function try_user_config {
	set root="${1}"
	for dir in boot grub grub2 boot/grub boot/grub2 @/boot/grub @/boot/grub2 @rootfs/boot/grub @rootfs/boot/grub2; do
		for name in '' autoboot_ libreboot_ coreboot_; do
			if [ -f /"${dir}"/"${name}"grub.cfg ]; then
				unset superusers
				configfile /"${dir}"/"${name}"grub.cfg
			fi
		done
	done
}
function search_grub {
	for i in 0 1 2 3 4 5; do
		try_user_config "(${1}${i})"
		for part in 1 2 3 4 5; do
			try_user_config "(${1}${i},${part})"
		done
	done
}
function try_isolinux_config {
	set root="${1}"
	for dir in '' /boot; do
		if [ -f "${dir}"/isolinux/isolinux.cfg ]; then
			syslinux_configfile -i "${dir}"/isolinux/isolinux.cfg
		elif [ -f "${dir}"/syslinux/syslinux.cfg ]; then
			syslinux_configfile -s "${dir}"/syslinux/syslinux.cfg
		fi
	done
}
function search_isolinux {
	for i in 0 1 2 3 4 5; do
		try_isolinux_config "(${1}${i})"
		for part in 1 2 3 4 5; do
			try_isolinux_config "(${1}${i},${part})"
		done
	done
}

menuentry 'Load operating system  [o]' --hotkey='o' {
	search_grub ahci
}
menuentry 'Search GRUB2 configuration (USB)  [s]' --hotkey='s' {
	search_grub usb
}
menuentry 'Search ISOLINUX menu (USB)  [u]' --hotkey='u' {
	search_isolinux usb
}
menuentry 'Search ISOLINUX menu (AHCI)  [a]' --hotkey='a' {
	search_isolinux ahci
}
menuentry 'Poweroff  [p]' --hotkey='p' {
	halt
}
menuentry 'Reboot  [r]' --hotkey='r' {
	reboot
}