resetting admin password on a Mac

I had a client with a Mac where we did not have the admin credentials for the sole administrator on the laptop.  I was luckily able to find this option to tell the mac to set itself up from scratch by removing the file that tells the Mac it has already gone through the initial setup process so it goes through the initial setup process again on the next reboot.  That is described here:

http://osxdaily.com/2010/08/10/forgot-mac-password-how-to-reset-mac-password/

In case this that post is ever removed, here are the steps:

Restart the Mac holding down the Command+S keys, this will take you into Single User Mode and its Terminal interface

type:
mount -uw /

type:
rm /var/db/.applesetupdone

type:
reboot

This worked very well for me and allowed me to create a new account on the Mac and did *not* delete the existing data already on the Mac on the user whose password we did not know.

resetting a password on a Mac

This is a good article on resetting your Mac password if you have lost it and you have the original Mac OS installation discs:

http://kb.wisc.edu/helpdesk/page.php?id=3853

resetting a domain admin password on Windows 2008

I had lost the main admin password on one of my client's Windows 2008 SBS boxes, and I thought I'd have to try one of the many utilities that exist for changing passwords outside of Windows, but instead I found this:

http://lordoftheping.blogspot.com/2009/05/i-did-not-use-my-tests-virtual-machines.html

Using just the Windows 2008 DVD, you can reset any domain admin password.

Info recreated here just in case that page is ever taken down:
* Boot onto DVD of Windows Server 2008
* Choose “Repair your computer”
* Launch cmd
* Go to c:\windows\system32
* Rename Utilman.exe to Utilman.exe.bak
* Copy cmd.exe to Utilman.exe
* Reboot on Windows
* Do the keyboard shortcut Windows + U when on the logon screen
* net user administrator Newpass123 inside the cmd
* log on with the domain admin account and this new pass
* change the password to remember it if needed
* Reboot on the DVD to put back the original Utilman.exe


Youtube video of the process here:
http://www.youtube.com/watch?v=Ar-VoO9ogHc