How to forget the root user password in Linux

GRUB: on the boot loader menu, type [e] to enter the editing mode. You will face a list of pilot projects. Find the following output sentence lines: & nbsp; kernel/vmlinuz-2.4.18-0.4roroot/dev/hda2 & nbsp; press the arrow key until this line is highlighted GRUB: on the boot loader menu, type [e] to enter the editing mode. You will face a list of pilot projects. Find the following output sentence lines:

Kernel/vmlinuz-2.4.18-0.4 ro root =/dev/hda2

Press the arrow key until the line is highlighted, and then press [e]. now you can add a single entry at the end of the text to tell GRUB to guide the single-user Linux mode. Press the [Enter] key to make the editing result take effect.

You will be taken with the edit mode screen. From Here, Press and GRUB will guide the single-user Linux mode. After loading, you will face a shell prompt similar to the following:

Sh-2.05 #

Now, you can change the root command and type:

Bash # passwd root

You will be asked to retype the password for verification. After the password is changed, you can enter reboot at the prompt to reboot. then, you can log on as the root user as usual.