almost 6 years ago

Grub2 supports loopback device, which is an iso image. So it will be very easy for Grub2 to load linux kernel image and/or initramfs from an iso image.

Booting your PC into Grub2 command line,

set iso=/systemrescuecd-x86-3.8.1.iso
loopback loop ${iso}
linux  (loop)/isolinux/rescue64 docache setkmap=us isoloop=${iso}
initrd (loop)/isolinux/initram.igz
← .Xdefaults and .Xresources, the X resources EFI stub kernel booting ZFS root filesystem with builtin initramfs →
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