Dragora GNU/Linux-libre fails partially to boot and enters busybox sleep 3323

Hello. I have successfully wrote a Dragora ISO image to an USB pen using Rufus, but, when I try to boot it,
at first all processes start normally, then this error appears: Code:mount: mounting /UP/cdrom/dragora.sfs on /UP/squash failed: No such file or directory And then busybox enters sleep 3323