i don't want to dd iso to my whole usb disk.
i always try to boot iso from grub. both in hard disk and usb flash disk.
but with clear livecd , what's the cheat code to tell the kernel where the iso is ?
this is something like iso-scan for ubuntu, img_dev for arch, etc.

i've spend seral hours to try to boot the iso file, but always faild by receive this report:
failed to find the installer media.
i even tried to extract the iso to a partition.still faild.

currently my grub menu is :

menuentry "clear linux EFI"{

	search --label --set "nvKubVar"

	chainloader /EFI/BOOT/BOOTX64.EFI

	}

menuentry "clear linux x64 livecd" {

        set isofile="/iso/clear-32820-live-desktop.iso"

        search --no-floppy -f --set=root $isofile

        probe -u $root --set=uuid

        loopback loop $isofile 

        linux  (loop)/kernel/kernel.xz  root=PARTUUID=$uuid lang=zh_CN   console=tty0 console=ttyS0,115200n8 cryptomgr.notests init=/usr/bin/initra-desktop initcall_debug intel_iommu=igfx_off kvm-intel.nested=1 no_timer_check noreplace-smp page_alloc.shuffle=1 rcu_nocbs=0-64 rcupdate.rcu_expedited=1 rootfstype=ext4,btrfs,xfs,f2fs tsc=reliable rw  rootwait

        initrd (loop)/EFI/BOOT/initrd.gz

}