12 About Your System• Operating system documentation describes how to install (if necessary),configure, and use the operating system software.• Documentation for any components you purchased separately providesinformation to configure and install these options.• 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 "Entering the System SetupProgram" on page 47. Opens the utility partition, allowing you to run the system diagnostics.See "Running the System Diagnostics" on page 154. Enters the boot mode selection screen, allowing you to choose a bootdevice. Starts PXE boot. Enters the Baseboard Management Controller (BMC) ManagementUtility, which allows access to the system event log (SEL) andconfiguration of the remote access controller (RAC) card. See the DellOpenManage™ Baseboard Management Controller User’s Guide formore information on setup and use of BMC. This keystroke enters the SAS Configuration Utility. See your SAScontroller User’s Guide for more information.