39Main MenuYour system’s BIOS settings were configured at the factory to maximizeperformance with the options you ordered. Generally, you need to runSETUP only if you install a new or different hard drive, if the on-boardbattery fails, or if you otherwise add to or change your basic hardware.SETUP’s Main Menu allows you to view and configure several basicparameters, including system time, date, and daylight savings, Diskette Aand B, system memory (RAM) timing, memory shadowing, bootsequence options, and video system type.The Main Menu lets you configure four PCI local bus IDE devices:• IDE Adapter 0 Master (Drive letter, capacity in megabytes)• IDE Adapter 0 Slave (Drive letter, capacity in megabytes)• IDE Adapter 1 Master (Drive letter, capacity in megabytes)• IDE Adapter 1 Slave (Drive letter, capacity in megabytes)Each of the four IDE Adapter subsections lets you view and customizethe settings for a separate PCI local bus IDE device attached directly toyou mainboard. The subsections are described on the following pages.SETUP’s Main Menu also contains subsections for Memory Control,Memory Shadow, and Boot Sequence. Finally, System Memory andExtended Memory are displayed. At the very bottom is a chart showinghow to navigate and change values in SETUP.Chapter 3 - Using SETUP