ASRock P4i48 User Manual - Page 23

3.3.2 IDE Configuration Advanced BIOS SETUP UTILITY IDE Configuration OnBoard IDE Operate Mode OnBoard IDE Controller Primary IDE Master Primary IDE Slave Secondary IDE Master Secondary IDE Slave SATA1 SATA2 [Enhanced Mode] [Both] [Hard Disk] [Not Detected] [Not Detected] [Not Detected] [Not Detected] [Not Detected] Set [Compatible Mode] when both Legacy OS (MS-DOS, Win Me / 98SE) and SATA device are used. Set [Enhanced Mode] when Native OS (Win 2000 / XP) is used. +F1 F9 F10 ESC Select Screen Select Item Change Option General Help Load Defaults Save and Exit Exit v02.54 (C) Copyright 1985-2003, American Megatrends, Inc. OnBoard IDE Operate Mode Please select [Compatible Mode] when you install legacy OS (Windows ME / 98SE) into SATA device. If you install legacy OS into IDE HDD while SATA devices are used, you also need to select [Compatible Mode]. If native OS (Windows 2000 / XP) is installed into SATA device, please select [Enhanced Mode]. You also need to select [Enhanced Mode] while native OS is installed into IDE HDD and SATA devices are used. If you do not install any SATA device, please also select [Enhanced Mode] no matter you use legacy OS or native OS for the system. Please note that the following options will be varied depending on the "OnBoard IDE Operate Mode" ([Compatible Mode] or [Enhanced Mode]) that you selected. When [Enhanced Mode] is selected: OnBoard IDE Controller You may enable either the primary IDE channel or the secondary IDE channel. Or you may enable both the primary and the secondary IDE channels by selecting [Both]. Set to [Disabled] will disable the both. Configuration options: [Disabled], [Primary], [Secondary], [Both]. When [Compatible Mode] is selected Combined Mode Option It allows you to select between [Pri IDE + SATA] and [SATA + Sec IDE]. If it is set to [Pri IDE + SATA], then the secondary IDE will not work. Likewise, if it is set to [SATA + Sec IDE], then the primary IDE will not work. Because legacy OS (Windows ME / 98SE) only supports four IDE devices, you have to choose either [Pri IDE + SATA] or [SATA + Sec IDE] when the installed SATA device is used with legacy OS. 23