1. If you are trying to install Windows 98, please type in this command “setup /PJ” to execute installation of OS. “PJ” command will enable ACPI Advanced Configuration and Power Interface function of Win98.
2. If Windows 98 has already been installed on your system, please open device manager then select “System Device” double click “Advanced Power Management” you will see an option “Update Device Driver”. Please choose “ACPI” and follow the setup message on screen to finish installation. After installation, please restart system to apply changes. Please note that the OS may not boot up after the changes made, Gigabyte will not guarantee any results after changing the settings.
If your 7ZXR PCB revision is 1.0 Southbridge: VIA 686A, ATA 100 transfer rate is only supported at IDE 3 and 4 from Promise controller. The Promise IDE controller has its own BIOS and will show its details later after POST, it won't be shown in the BIOS setting. Please wait and let the computer continue to boot, then you can see the HDD ATA details if your HDDs are connected in IDE 3 and 4. If your 7ZXR PCB version is 2.1 Southbridge: VIA 686B, all IDE 1 to 4 channels can support ATA100 devices. You can see the HDD details in POST and in the BIOS setting when HDDs are connected in IDE 1 and 2. Details of HDDS connected to IDE 3 and 4, please see their information under Promise controller bios.