Possible Duplicate:
How can i give Admin permissions to my account?

When I installed Ubuntu I used a password and "admin" type account. But accidentally I changed it's type to "standard". So I can't use any privileges right now.

At least I can't access any of my partitions. When I try to access them the system asks for a password and says my old password is wrong.

marked as duplicate by Eliah Kagan, Rinzwind, hhlp, fossfreedom Jan 27 '13 at 13:32

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