Can I reset a Windows XP administrator password?
How would I do it?
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You can use chntpw
Assuming you have a dual boot with windows and ubuntu.
First you need to install chntpw
apt-get install chntpw
mount your Windows Partition writeable
Goto the following directory (assuming you mounted your windows partition to /mnt)
cd /mnt/WINDOWS/system32/config chntpw -u Administrator SAM
SAM is the file where the password is stored. You should set it to an empty one choosing option 1
- – - – User Edit Menu: 1 – Clear (blank) user password 2 – Edit (set new) user password (careful with this on XP or Vista) 3 – Promote user (make user an administrator) (4 – Unlock and enable user account) [seems unlocked already] q – Quit editing user, back to user select
Reboot to windows Login as Administator without password :-)
If you have forgotten your administrator password for Windows, you can use a Ubuntu Linux live CD or live USB to reset the password. This tutorial will show you how to do that, step by step.
Also there are many ways that you can use, for example yo can use the windows Sysinternals, they are utilities that can help you in resetting you administrator and other users passwords. Another option is to use Hirens CD if you have access to it, it also have multiple utilities that will help. Another option is the ERD Commander from Microsoft, that will help you in resetting the password among other things.
Ophcrack might be a useful tool, but I don't see anything Ubuntu specific in you question.