I BOUGHT AN IMAC!!!! YESSSS!!!!

There's a way to just make a new admin account without any passwords, I'll post a link in a sec.

Here:

Procedure

1. Boot into Single-User Mode

Turn on the computer and when you hear the startup chime hold CMD+S. This boots the computer into single-user mode, giving you root access. It is important to note that this can be blocked by a firmware password. If that’s the case, head on over to our other guide on how to get into single-user mode while locked.

2. Mount the Hard Drive

Once single-user mode loads (it looks like a black screen with white text) we need to mount the hard drive. So at the prompt type in:

/sbin/mount -uw /

3. Remove the “Setup has been completed” File

Now that the drive is mounted we can edit the file system. We need to delete a file that tells your computer that you have completed setup. So type in:

rm /var/db/.

This deletes the file “.applesetupdone” in the /var/db/ directory, which the computer checks for on startup to ensure that the computer has been set up.

4. Reboot

Pretty self explanatory. We need the system to reboot so it can check for the file and not find it. Type in:
reboot

5. Watch the Video

Your computer will shut down and reboot. A setup window should pop up asking what language you want your computer to be in. Just like it would when you turn on your computer for the first time. After you select a language, a welcome video plays. This is when you need your headphones, unless there is nobody around, in which case you can enjoy the little music.

6. Continue Setup

Go through the rest of the setup process.


Sent from an urban blind peering from behind a .50 caliber Barrett laser-sighted sniper rifle aimed right at your forehead.