My book essential not recognized on power mac g4

Hi everyone. I’m new to the website. I have a Mac 10.4 Tiger desktop power Mac g4. I have a 2TB My Book Essential external hard drive . I have connected the drive to my computer, but nothing happens. If anyone knows how to fix this problem, I would really appreciate it! P.S… I have no idea how to format the drive for Mac …Thanks so much for any responses in advance.