Reset admin password
How to reset a forgotten PW on Tiger? There was no installation CD.
iMac, Mac OS X (10.4.11)
Is it the admin PW, or Firmware protection PW?
For the first one...
Reset OS X Password Without an OS X CD...
http://theappleblog.com/2008/06/22/reset-os-x-password-without-an-os-x-cd/
Admin Hack...
http://www.hackmac.org/?q=node/4
Starts up like the first time you buy a new Mac, but after filling in all that info again, you should have access to the computer and the other Users & files will still be there... give the new User a different name than an existing one.