Next, select your Kernel version from the grub menu item and press
e key to edit the first boot option. Now use the Down arrow key to find the kernel line (starts with “linux16“), then change the argument
rw init=/sysroot/bin/sh as shown in the screenshot below.
Once you have finished the task in the previous step, press
F10 to boot into single user mode (access an emergency shell).
Now mount root
(/) filesystem using the following command.
# chroot /sysroot/
At this point, you can perform all the necessary low-level system maintenance tasks. Once you are done, reboot the system using this command.
# reboot -f