Article Title: How to Use GRUB or LILO to retrieve the Linux lost root password. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source 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 (not the same here)
Press the arrow keys 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 Linux mode of a single user. Press the [Enter] key to make the editing result take effect.
You will be taken with the edit mode screen. From here, press [B] 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.
LILo: when the system starts to display the LILO boot screen, press TAB for the graphic Boot Mode to enter the text mode, and then at LILO
Enter linux single press enter to enter the password-free console, and then use the passwd command to change the root password
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