Login to your Console - Lilo / VM Console
Single user mode is a mode in which a multi-user computer operating system boots into a single superuser. It is mainly used for maintenance of multi-user environments such as network servers. Some tasks may require exclusive access to shared resources.
The first thing to do is to open Terminal and log in to you CentOS 7 server.
After, restart you server wait for GRUB boot menu to show.
Next step is to select your Kernel version and press
key to edit the first boot option.Find the kernel line (starts with “linux16“), then change the
rw init=/sysroot/bin/sh or rw init=/sysroot/bin/bash
When you have finished, press
Ctrl-X or F10
to boot into single user mode
After mount root filesystem using the following command:
# chroot /sysroot/
Now, to finish this process reboot your server using the following command:
# reboot -f