set isofile="/b/orel-2.12.43.6-30.03.2022_18.22.livecd.iso"
search --no-floppy --file --set=root ${isofile}
loopback loop ${isofile}
linux (loop)/live/vmlinuz-4.15.3-1-generic boot=live findiso=${isofile} net.ifnames=0 noautologin nox11autologin components username=astra-live locales=ru_RU.UTF-8,en_US.UTF-8 keyboard-layouts=us,ru keyboard-variants=, keyboard-options=grp:ctrl_shift_toggle,grp_led:scroll
initrd (loop)/live/initrd.img-4.15.3-1-generic