You want to boot a linux system into singer user mode/ what options might you add to a linux kernel options list in a boot loader to accomplish this task?
I'm used to Red Hat, CentOS and Fedora. You interupt the boot by pressing a key, when the boot menu comes up press 'e' to edit the arguments. (Before systemctl) add " 1" to the vmlinuz line. (With systemctl) add " systemd.unit=single".
