To remove root password in linux follow
these instructions
When
System Successfully boot, it will ask for username and password. But you don't
know the root's password. To change the root password you need to boot the
system into single user mode.
You can pass the kernel arguments from the boot
loader.
Reboot
system with alt + ctrl + del key combinations
Press spacebar on Bootloader screen
This will drop you in OS selection screen
Select linux (If you have multibooting then select linux)
From grub boot loader screen select kernel parameter line and press e
In kernel editing mode press space bar and write s in the end of line just after the rhgb quiet and press enter key that will bring in grub bootloader screen
This
change will tell to boot system in single user mode.
After loading essential modal kernel will drop in rescue mode with root prompt
After loading essential modal kernel will drop in rescue mode with root prompt
Now run passwd command to reset root password
and init 5 command to run system in graphic mode or you can just reboot system to on its default run level
Have a Good Day Viewers!!
Note : I've tried this on RedHat Linux. I'm sure it will work on the other linux as well