Brian, I did a restart and then opened the System Profiler and the Disk Utility and there was no sign of the new Seagate SATA drive. The disk and instructions that came with the SYBA PCI Serial ATA Host Controller Card said NOTHING about Macintosh and I have no idea how to install the drivers that must be required. Looks like the SYBA card will go back to Fry's and I refuse to pay $80 for a Mac card that looks just like the PC card. I can buy a new old style drive for the price of the rip off card. It was a good idea that did not work! Anybody been able to get a PC PCI Serial ATA controller card to work on a Mac? Good think I did not erase the old WD 40 GB hard drive. It will go back in the G4 on Wednesday Dick --------------------------------- B G briang113 at pacbell.net Tue Jul 12 12:59:40 PDT 2005 [G4] Help with Installing a Seagate SATA drive on a G4 AGP You didn't state what steps you took beside turning on the computer. So first I would run System Profiler and make sure the SATA card is being recognized, if it is try Disk Utilities and format the drive. If the card does not show up in the profiler reinstall the drivers also remove and reseat the card to make sure it is all the way in the slot, if the card is present but there is no drive, double check your connections to the drive. Brian