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忘记ubuntu16.04的root密码后找回

  1. 进入系统时按Esc键
  2. 再进入Advanced options for ubuntu
  3. 选中带*号的recovery mode
  4. 选中root Drop to root shell prompt
  5. passwd 修改密码 报passwd:authentication token manipulation error passwd:password unchanged
  6. 输入mount -rw -o remount /
  7. 重新passwd修改就可以了


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