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I haven't used my linux computer in a couple of months because I went abroad, so I downgraded to be safe in case it got stolen; But the thing is I cannot log in because the password I believe to have used does not work any more. Is there a way I can change this or do I have to take it into a store? Thanks!

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marked as duplicate by Seth, Alvar, Geppettvs D'Constanzo, bcbc, Eric Carvalho May 8 '13 at 0:03

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

Hold shift when you bootup your computer. The GRUB menu will come up. Select "Advanced Options" and then "Recovery Mode." Once you are in recovery mode, type:

mount -o remount,rw /

to get your filesystem mounted read/write. Then type:

passwd {your username}

Then enter your new password. Reboot and you should be good to go. Let me know if you have any problems and we'll take it step by step.

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