Use Ubuntu 12.04 Grub to boot into single user mode
Background information. http://www.computersecuritystudent.com/UNIX/UBUNTU/1204/lesson2/index.html Lets say you lost the root password and you have no way to figure it out. No problem. All you simply have to do is to physically power off the machine and power it back on. During the start of the reboot, hit the "shift" key. If you are using VMware, you will need to click in the Black VMware window before reboot and then press the "shift" key
Background information. http://www.computersecuritystudent.com/UNIX/UBUNTU/1204/lesson2/index.html Lets say you lost the root password and you have no way to figure it out. No problem. All you simply have to do is to physically power off the machine and power it back on. During the start of the reboot, hit the "shift" key. If you are using VMware, you will need to click in the Black VMware window before reboot and then press the "shift" key