Сферический конь в вакууме (или одной строкой обо всём)

menuentry "Boot SystemRescueCd using default options" {
    load_video
    insmod gzio
    insmod part_gpt
    insmod part_msdos
    insmod ext2
    search --no-floppy --label boot --set=root
    loopback loop /systemrescuecd.iso
    echo   'Loading kernel ...'
    linux  (loop)/sysresccd/boot/x86_64/vmlinuz img_label=boot img_loop=/systemrescuecd.iso archisobasedir=sysresccd setkmap=us
    echo   'Loading initramfs ...'
    initrd (loop)/sysresccd/boot/x86_64/sysresccd.img
}
menuentry "Boot SystemRescueCd and copy system to RAM"{
    load_video
    insmod gzio
    insmod part_gpt
    insmod part_msdos
    insmod ext2
    search --no-floppy --label boot --set=root
    loopback loop /systemrescuecd.iso
    echo   'Loading kernel ...'
    linux  (loop)/sysresccd/boot/x86_64/vmlinuz img_label=boot img_loop=/systemrescuecd.iso archisobasedir=sysresccd copytoram setkmap=us
    echo   'Loading initramfs ...'
    initrd (loop)/sysresccd/boot/x86_64/sysresccd.img
}

archisolabel= Set the filesystem label where archiso files reside. Default: (unset)
archisodevice= Set the device node where archiso medium is located. Default: "/dev/disk/by-label/${archisolabel}"
archisobasedir= Set the base directory where all files reside. Default: "arch"
copytoram= If set to "y" or just "copytoram" without arguments, all SquashFS are copied to "RAM". Default: (unset)

valera_cr
akorop, да все там есть.