I recently received a G3 iMac from eBay and I went ahead and installed a Seagate Barracuda 80GB harddrive. So I started the computer up, with the Panther CDs in and pressed 'C'. I went into Disk Utility and it sees the drive: Connection Bus - ATA Connection Type - Internal Connection ID - Device 0 Write status - Read/Write I clicked the erase tab to erase the hard drive and called it 'Untitled'. 'Untitled' mounted, and I went back to the Mac OS X installer. But my drive called 'Untitled' has a bid red exclaimation mark on it. I clicked on it and it says 'You cannot install Mac OS X on this volume. You cannot start up your computer using this volume." How do I resolve this? Is it a faulty HD? Thanks for any help!