Two workarounds for Linux forgotten root password

Because of the security needs, the system generally has only one root user, so if you forget the root user login password, so you need to change the password by other means.
1. Via single-user mode
(1) Restart the system and press any key to enter the Grub menu. When the Grub menu appears, press ↑,↓ to boot and navigate to the operating system options you want to enter, such as "Red Hat Enterprise Linux" and press "E" to enter edit mode. to operate.

(3) Enter a single and return to grub mode Press B to enter the one-user mode and then change the password with passwd root.

2. Reset the root user password via the first aid mode

Finally exit, select Reboot (restart).

Two workarounds for Linux forgotten root password