How to retrieve root password
There’re 2 ways to solve this problem.
1st way
Reboot your linux machine
Get into “grub” menu then press “e”
Go to your default kernel then press “e” again
Then go to grub promp grub> default_kernel single <– type “single” at the end of your kernel. We are entering single mode.
Then it will appear as sh-3.00#
Then type “passwd” or edit /etc/passwd