CentOS

hi there
I can't login as root after set state of selinux to enforcing (SELINUX=enforcing) in /etc/selinux/config file and reboot
I don't have GRUB boot loader to boot single user from it

I resolved my problem in this ways:

• boot server from centos 7 boot image

• select Troubleshooting from items menu

• select Rescue a CentOS system from next menu

• select continue

• press Enter to get a shell

• change root environment with this command: # chroot /mnt/sysimage

• edit /etc/selinux/config file and change selinux mode to permissive

• exit from root shell and reboot server

Thanks for coming back and letting us know how you fixed it. I'll marked the thread as solved.