Forgot your root password!
Thinking of reinstalling OS and loosing current data. Not to worry this remarkable opensource OS are meant to be user-friendly.
Follow these steps and you can reset your password without a re-installation.
Hit shift key at the beginning of boot
Select Advanced and go into recovery mode
Using the arrow keys scroll down to root and then hit Enter.
You should now see a root prompt, something like this:
root@ubuntu:~#
At this stage you should have a read-only filesystem. You have to remount it with write permissions:
mount -o rw,remount /
Now we can set the user’s password with the passwd command. (In this example I will use jorge as the example, you need to substitute whatever the user’s username is):
root@ubuntu:~# passwd jorge
Enter new UNIX password:
Retype new UNIX password:
passwd: password updated successfully
root@ubuntu:~#
Isn’t that easy, I am a fan of linux and love the Ubuntu releases.