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I'm trying to do a fresh install of Ubuntu 12.04 from a USB drive. I downloaded the ISO file and loaded it onto the USB drive with from my existing Ubuntu 11.10 with the usb startup disk creator. When I boot from the usb drive, it loads the login page and asks for user name and password. I'm not sure what to do at this point. I tried to login with my 11.10 user name and it doesn't work. I've installed previous versions of Ubuntu from a usb drive and this has never happened--it usually takes me straight to the desktop from where I can run the installer. What do I do?

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The liveCD username and password, by default, are:

Username: ubuntu

Password: ubuntu

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Have you tried root and blank password? then change the pass via

$ passwd 

Or I think you may have to set the password first via passwd root

You can also try this

If you forgot you password for your ubuntu system you can recover using the following steps

  • Turn your computer on.

  • Press ESC at the grub prompt.

  • Press e for edit.

  • Highlight the line that begins kernel ………, press e

  • Go to the very end of the line, add rw init=/bin/bash

  • press Enter, then press b to boot your system.

  • Your system will boot up to a passwordless root shell.

  • Type in passwd username

  • Set your password.

  • Type in reboot

  • the root account is disabled, even on the LiveCD. That's what sudo is for. – Thomas Ward Nov 1 '12 at 13:22

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