I put an 80gb Seagate hard drive into an iMac 233. I was able to fromat the drive and partition it so tha I have a 4gb and two other partitons. I was able to install OS 9 but have been unable to boot to the new 4gb drive. I am only able to boot with the OS disk and cannot change the start up disk. I AM BAFFLED I have never had this much trouble with any Mac like this. Help!!