help area), the changes take effect immediately.
System Setup Options
The following subsections outline the options on the System Setup screens.

Main Screen

When the System Setup program runs, the main program screen appears (see Figure6-1).

Figure 6-1. Main System Setup Screen

The following options and information fields appear on the main System Setup screen:
lSystem Time — Resets the time on the system's internal clock.
lSystem Date — Resets the date on the system's internal calendar.
lDiskette Drive A: — Displays the type of diskette drive for your system.
lSystem Memory — Displays the amount of system memory. This option has no user-selectable settings.
lMemory Interleaving — Displays memory interleaving information for the system. This option has no user-selectable settings.
lVideo Memory — Displays the amount of video memory. This option has no user-selectable settings.
lRedundant Memory — Enables or disables the redundant memory feature. All banks should have memory modules of the same type and size for this
feature to function properly.
The redundant memory options vary according to the number of populated memory banks and whether the same type and size memory modules are
installed in each bank:
¡Disabled — one or two memory banks are populated with the same type and size memory modules, or the memory banks are populated with
different types of memory modules.
¡Disabled and Spare Bank Enabled — three memory banks are populated with the same type and size memory modules.
lOS Install Mode — Determines the maximum amount of memory available to the operating system. On sets the maximum memory available to the
operating system to 256 MB. Off (default) makes all of the system memory available to the operating system. Some operating systems will not install
with more than 2 GB of system memory. Turn this option On during operating system installation and Off after installation.
lCPU Information — Displays information related to the microprocessor bus and microprocessors such as speed, cache size, and so on.
You can also enable or disable Hyper-Threading by changing the setting of the Logical Processor option. (The default is enabled.)
lBoot Sequence — Displays the Boot Sequence screen, discussed later in this section.
lHard-Disk Drive Sequence — Displays the Hard-Disk Drive Sequence screen.
lIntegrated Devices — Displays the Integrated Devices screen.
lPCI IRQ Assignment — Displays a screen that allows you to change the IRQ allocated to each of the integrated devices on the PCI bus, and any
installed expansion cards that require an IRQ.