I second the notions about talking to your father. Circumventing his password will only get
you into trouble.
But, to everyone who thinks you need to do outrageous things (like removing the hard drive) to get Linux root access:
The Linux root password is ridiculously easy to work around if you have control of the boot process.
All you need is access to the bootloader (
init=/bin/bash) or a LiveCD (
sudo su -, mount root device somewhere,
BIOS passwords, now, that's a different story. Unless you have the physical access to reset the BIOS.
Bottom line, you have physical access to the computer, it's hard to keep you out.
Now, original poster, please go back to the top and read the first line again.