Aug 3, 2010 - The password you use to log in to your computer no longer matches that of. At first it already has an old Ubuntu installation on it and someone else. Although I have fixed it at work, I still have this kind of problem at home.
It worked!Since you have skipped some steps that some new users might skip too and find themselves in trouble, I would like to say all what I have done: First I pressed the key 'e' as the Kali Linux boot option was selected.After that I edited where the K.P mentioned in the post and pressed F10 key.Then after hundreds of texts emerging and fading, you start to gain access to something like shell.type passwd root and set your password.Remember that you have to type password twice.–Dec 5 '15 at 20:13. Well I think there is a way taking it back if your user have sudo prvilage and you find out that username?well let go through it.first you must find a live OS. You can use Kali in live mode, Ubuntu in live mode or whatever.mount the hard disk that has Kali or the root of your Kali OS.find /etc/passwd and open it. You might find the username you set inside it. Something like this:user:x:1000:1000:USER,:/home/user:/bin/bashthat's your username.Hopefuly you know that username pass else you are screwed. If you have the pass you can login to kali with your own username.to change root.
You must use this command:sudo su -prompts your username's password.now you have access to root!!!change your root pass by passwd.