Bought eMac with 10.4.3 but no OS disks - need administrator password

Question

Just bought an eMac (1.25 GHz) with system 10.4.3 installed from the local Goodwill computer store. Boots and runs fine. However, to load some CDs and run DVDs, it requires the administrator password, which I don't know. The administrator is listed as "Owner Owner," and no OS disks or documentation were included.
How do I reset the administrator password if I don't know the original password and I don't have the OS CDs?

Answer 1

I've never used any of these, but one or more may work for you.
Here's the instructions if you have the discs.
*Mac OS X: Changing or resetting an account password*
http://support.apple.com/kb/HT1274?viewlocale=en_US
Changing your administrator password
http://docs.info.apple.com/article.html?path=Mac/10.4/en/mh655.html
Here's one method to reset the password without the install disc:
1. boot computer and hold the "apple" key and the "s" key.
2. wait for terminal show
3. release keys
4. type without the quotes: "/sbin/mount -uaw"
5. press enter
6. type without the quotes: "rm /var/db/.applesetupdone
7. press enter
8. type without the quotes: "reboot"
9. press enter
This will let you create a new admin account when you reboot your computer.
Also, without the discs, look at Mac OS X Tip - No Password, No Root, No CD? No Problem.
http://www.macobserver.com/tip/2003/06/16.1.shtml
Here is a way to get around not knowing the admin password on Macs.
To reset your OS X password without an OS X CD you need to enter terminal and create a new admin account:
1. Reboot
2. Hold apple + s down after you hear the chime.
3. When you get text prompt enter in these terminal commands to create a brand new admin account (hitting return after each line):
* mount -uw /
* rm /var/db/.AppleSetupDone
* shutdown -h now
4. After rebooting you should have a brand new admin account. When you login as the new admin you can simply delete the old one and you’re good to go again!
 Cheers, Tom