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Reset Root Password

Things have changed in RHEL 9. rd.break does not work anymore. These are the steps that need to be taken.

Find the line that loads the Linux kernel and add init=/bin/bash to the end of the line.
mount -o remount,rw / This is necessary because it's mounted as read-only.
passwd root
touch /.autorelabel
exec /usr/lib/systemd/systemd/ To reboot the machine or /sbin/reboot -f