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How do I reset a lost Administrative(root) password?

Ubuntu 11.1 is rejecting my password when I try to do anything that requires authentication.

I am also asked for an administrative password when installing a new printer driver. I did not know I had an administrative password separate from the regular password.

So, I need help in getting a password that works and discovering what my administrative password is. Any help will be greatly appreciated.

Sam W. Keenon Center Point, AL

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marked as duplicate by fossfreedom, Takkat, Jorge Castro, htorque, Marco Ceppi Jan 26 '12 at 2:43

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If you only had 1 account on the installation, then your account is an 'administrator'. –  Liam W Jan 15 '12 at 12:44

1 Answer 1

Reboot in recovery mode. Choose the remount every partition option, to get rw access. Enter passwd your_user_name, and give the new password.

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Thanks for the input. However that was the first thing I did. The password works fine except it is still rejected when I try to install a new printer driver. Even sudo rejects it if I run the installation program from the prompt. –  Sam W. Keenon Jan 15 '12 at 18:26
    
then delete the keyring. This is a good starting point for gnome2 ubuntu: ubuntu-tutorials.com/2010/01/16/… You need to do a similar thing. OR launche the program Passwords and do there the job. –  gajdipajti Jan 16 '12 at 0:56

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