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root password reset in centos 8
Press up and down key simultaneously so that you will access the GNU-GRUB2 menu. From the first option hit E to edit the first grub menu.
After editing the GNU-GRUB2 menu find the lines started with linux16 and hit End button to go to the last line and add rd.break to it.
After add these lines hit Ctrl + X to boot.
First mount the /sysroot directory
# mount -o rw,remount /sysroot
Then Change the root directory to /sysroot
# chroot /sysroot
After that change the root password and you will be prompted to add the new password make sure it is strong.
# passwd root
Finally after running the passwd command the Linux need to be set the new password by relabeling to the /etc/passwd file and it is necessary for running with correct SELinux context.
# touch /.autorelabel
When done type two times exit and exit command to exit from chroot jail and to reboot the system.
It takes several minutes depending on your system CPU and Hard Drive speed.
Login with root username and password provided during reset.
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