12 About Your System• Updates are sometimes included with the system to describe changes tothe system, software, and/or documentation.NOTE: Always check for updates on support.dell.com and read the updatesfirst because they often supersede information in other documents.• Release notes or readme files may be included to provide last-minuteupdates to the system or documentation or advanced technical referencematerial intended for experienced users or technicians.Accessing System Features During StartupTable 1-1 describes keystrokes that may be entered during startup to accesssystem features. If your operating system begins to load before you enter thekeystroke, allow the system to finish booting, and then restart your systemand try again.Table 1-1. Keystrokes for Accessing System FeaturesKeystroke Description Enters the System Setup program. See "Using the System SetupProgram" on page 31. Opens the utility partition, allowing you to run the systemdiagnostics. See "Running the System Diagnostics" on page 128. Enters the boot menu selection screen, allowing you to choose a bootdevice. Initiates PXE boot. Option is displayed for some SAS controller expansion cards. Entersthe SAS Configuration Utility, which includes RAID configurationoptions. See your SAS adapter User’s Guide for more information. Option is displayed only if you have PXE support enabled throughthe System Setup Program (see Table 2-1). This keystroke allows youto configure NIC settings for PXE boot. For more information, seethe documentation for your integrated NIC.