I have an eMac (version = 2.1) with DVD drive serial YM2383TW-N9K-ff12 700 mhz. PPC G4 256 ram runing os 10.2.8 and I'm trying to install os 10.4.7 Tiger. I have the gray discs. When I insert the disc I got this gray screen whit a bunch of scripts that tells me drive not supported. Any solutions out there I need help ASAP Thanx.