Reset Root Password From Recovery Mod RHEL 8 / CentOs 8
Perform following for Recovery Mode root Password Reset
1. type rd.break at the end of the line starting with Linux, once ready press CTRL+x.
2. Remount Sysroot with Read & Write access #mount -o remount,rw /sysroot.
3. Enter chroot system # chroot /sysroot.
4. Passwd to change root password # passwd password confirm password.
5. File-system relabeling # touch /.autorelabel
6. Exit the chroot # exit
7. Logout to normal boot # exit or logout
Relabelling will take some time depending on your system speed, once done login with changed root password.
centos 7