Change the root password on CentOS 7 Servers
At the boot menu, press e to edit the existing kernel (Core).
scroll down to the list until you see the line ro ,change ro to rw and start into a bash shell. It should look like rw init=/sysroot/bin/sh.
Press Ctrl + X to start into single user mode.
In the single user mode run the command,
chroot /sysroot
Run the commands to change the root password,
passwd root
After creating the password, run the commands below to update SELinux parameters
touch /.autorelabel
Exit and reboot your system. You should be able to sign on and use the system with the new password.
At the boot menu, press e to edit the existing kernel (Core).
scroll down to the list until you see the line ro ,change ro to rw and start into a bash shell. It should look like rw init=/sysroot/bin/sh.
Press Ctrl + X to start into single user mode.
In the single user mode run the command,
chroot /sysroot
Run the commands to change the root password,
passwd root
After creating the password, run the commands below to update SELinux parameters
touch /.autorelabel
Exit and reboot your system. You should be able to sign on and use the system with the new password.
