A Fedora Core hard drive I aquired

So here's the deal: My brother and I both have exactly the same model of laptop.  My brother, a very clumsy man, broke his laptops monitor, and continued to use it attached to an external monitor.  Recently we aquired a third laptop of the exact same model from a friend of my brothers, which did not function.  For whatever reason, it didn't boot.  So we tear it apart to get the monitor out and replace it with my brothers'; no big deal, I've taken apart laptops before.  Anyway, the remaining parts of the laptop appeared to be in working condition:  two 128MB memory sticks, a DVD drive, a battery (possibly dead),  and a hard drive; the purpose of this post.
So my brother gets the monitor and a single 128MB memory stick (which appears to not be functioning, but that's his problem), and I get the DVD drive, a 128MB memory stick, and the hard drive.  I figured that since the models were exactly the same, I could just swap it into my working laptop and boot the thing.  Well, I was right.  It booted up to an operating system chooser that was labeled Fedora Core, and had the two operating systems DOS and Fedora Core Linux.  I boot up the Fedore Core flawlessly and come to a log in screen.  I do not know any usernames or passwords for this hard drive.  So here is my question, /comp/:  How shall I go about getting logged into that machine?

There are similar discussions from looking at google,"resetting password +fedora core".

>2
Thanks, after a quick google I found this:
When the login banner appears, hit Ctrl+Alt+F1 to get a console. Login in as root and use
# passwd username
to change the user account's password. If you've forgotten your root password (meaning you're probably really desperate), at the grub splash screen, instead of hitting [enter] to boot your kernel, hit e to edit the boot options. Then select the line that begins with kernel and hit e again. Add the word single to the end of the line. Hit [enter] followed by b. The system will now boot into singleuser mode. Run passwd to change your root password and passwd username to change your user password.

isn't that a bit easy?

>>4
For better security you'd have to encrypt everything.

>>4
most linux security is just to prevent people from compromising your system remotely.  there's very little you can do about someone physically accessing your system or just ripping out your hard drive except >>5.  if i'm able to log in as root under linux, regardless of how, i pretty much have full access to all hardware attached to the system.