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To reset root credentials, follow the steps below.
Step 1. Reboot the system, access the console, and press 'e' to edit the grub menu.
 edit grub
Step 2. Once accessed the GRUB shell, scroll down until the line beginning with 'Linux'. Use the right arrow key to navigate to the end of that line, and then add the necessary line.
rd.break enforcing=0
 add parameters
GRUB has changed some lines:
On newer versions of Rocky Linux (and RHEL-based distros), the process of entering single-user mode or emergency mode to reset the root password has changed due to security enhancements like SELinux and console= redirections. The presence of a console= line in the GRUB kernel parameters can interfere with the standard output/input and cause rd.break to fail or land in an unexpected shell.
So it is necessary to remove console=tty0 line and then add the line below:
rd.break enforcing=0
Step 3. Login in emergency mode by pressing CTRL + x. This will enter the system in rescue mode.
Step 4. Remount /sysroot with the 'read write' mode.
mount -o rw,remount /sysroot
Change the Directory environment with the below command.
chroot /sysroot
 mount
Step 5. Reset the root password with the 'passwd' command.
passwd root
After that, exit from /sysroot from the exit command:
exit
Log in with new credentials from the root.
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