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When I boot Ubuntu 10.04.3 from a live CD, it asks me to enter a username and password. I have not booted before, and I haven't created an account.

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Then you aren't booting from the ( unmodified ) livecd. –  psusi Feb 13 '12 at 19:16
    
Can you specify at what stage you're asked for a username and password? Maybe you can take a photo of your screen? Are you booting from a real CD disk or from a flash drive? If the latter is true - have you or somebody ever used that flash drive before? –  Sergey Feb 13 '12 at 21:10
    
I tried to boot from a live-cd ( i get it from mail, long time ago) and from a flash drive (i used it before to install Ubuntu 11.10 successfully )... I'm asked for username and password just after the background appear –  Sofiane Bouamine Feb 15 '12 at 9:06
    
it look like the problem is in Gnome because when i try to log in using Ubuntu as username and a blank password in xterm session it work .... –  Sofiane Bouamine Feb 15 '12 at 11:20

4 Answers 4

up vote 13 down vote accepted

The default username is ubuntu, and the password is blank on an Ubuntu LiveCD.

Brent posted the following over on serverfault:

If the username "ubuntu" with an empty password doesn't work, you may be able to add a new user to the system as follows:

adduser username
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it didn't work ....i'am bigginer in ubuntu... can you explain to me how to add a new user to the system more simply...thnx –  Sofiane Bouamine Feb 13 '12 at 19:00
    
Sofiane - as @psusi said, an unmodified Ubuntu livedc should let you log in with the username ubuntu, and a blank password. If that doesn't work, the steps given should be fine - have a look at that linked question for some more options. –  Rory Alsop Feb 13 '12 at 19:59
    
thank you Rory Alsop .... when i try to mount the hd partition (sudo mount /dev/sda2 /mnt) i get: (mount: you must specify filesystem type) –  Sofiane Bouamine Feb 13 '12 at 20:37
    
@RoryAlsop: The instructions you are referring to will add a new user to the Ubuntu installation on your hard disk (assuming you already have one installed on /dev/hda1). This won't modify LiveCD. I don't see how this may help at all. –  Sergey Feb 13 '12 at 21:06
    
But interestingly, the fact that Sofiane has got that far implies a successful login - will amend my post. –  Rory Alsop Feb 13 '12 at 21:17

The username is ubuntu and there is no password. I found this information in this blog.

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While it's ubuntu for Ubuntu live images it also depends on the flavor. For Edubuntu it's edubuntu.

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Not blank...example in 14.10 live I installed xfce4 then logged out. Had to add a user. To do so press Ctrl+Alt+F2. You should now see a console. Type sudo adduser anyname and follow the instructions. Afterwards press Ctrl+Alt+F7. You should be at the graphic login able to use the info you created.

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protected by Community Oct 2 '12 at 18:40

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