Installing Mac OS 9.2.2 On a iMac G5 2.1 Ghz

Hey, I just bought a 2.1 Ghz iMac G5, and OS 9 is not installed, thus I mean Classic has no System Folder to boot off of and won't work at all. I have a 9.2.2 Installation Disc, but when I try to run the installer, it says the System Folder on the CD can not be used because the disk is Read Only, and that I should select a different System Folder. I tried copying the System Folder off the disk to my desktop then using that, but then Classic tells me that the System Folder can only be used on the original media, and not when copied to another drive. Is it possible for me to install Classic, or install OS 9 as a startup disk? Thank you very much.