[Ubuntu] What should I do if I forget the root password of Ubuntu?

What should I do if I forget the root password of Ubuntu?

• In the Ubuntu 16.04 system, the administrator password is lost or invalid due to misoperation, and the root password is forgotten. At this time, no root/sudo privilege operations can be performed. You can reset the root password through GRUB and restore the administrator account to a normal state.

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tool

• Ubuntu16.04操作系统

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Reset root password

• Start the system, display the GRUB selection menu (long press the shift key), and enter the selection interface.

• Select (advanced settings) enter key
  

• Boot to select advanced mode -> recovery mode (the newest one) -> root (directly press enter)
  
  

• Set the password as required. Manage passwords.
  command:Passwd root # 修改密码（这里修改的密码不去使用）
  

• After the modification is completed, shut down and restart

• After the implementation of the system to re-enter sudo passwd rootthe password change again. -The password is the new password
  

• carry out!

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