I bought a 10cd set of OS 9 and OSX install disks from someone online (not a store). When I received it, it turns out it's a bunch of CDs from an iBook. I tried to install OS9 on my Rev. C iMac (currently running 8.6) and it would not install, saying I needed to update my firmware. Am I screwed? If so, it's my own fault and I'll take it and learn from it, if there is some way to work around this, I'd appreciate it. As far as I know, I have the most current firmware for my iMac.