IBM A40I TYPE 2271 Hardware Maintenance Manual

Contents

Chapter 8. Additional Service InformationSecurity features . . . . . . . . . . . . . 85Passwords . . . . . . . . . . . . . . 85Power-on password . . . . . . . . . 85Removing a power-on password . . . . . 85Administrator password . . . . . . . . 86Administrator password control . . . . . 86Operating system password . . . . . . . 86Vital product data . . . . . . . . . . . 86Management Information Format (MIF) . . . . 86Alert on LAN . . . . . . . . . . . . 87BIOS levels . . . . . . . . . . . . . . 87Flash (BIOS/VPD) update procedure . . . . . . 88Flash recovery boot block jumper . . . . . . . 88Power management . . . . . . . . . . . 89Automatic configuration and power interface(ACPI) BIOS . . . . . . . . . . . . . 89Advanced Power Management . . . . . . . 89Automatic Hardware Power Managementfeatures . . . . . . . . . . . . . . . 89Setting Automatic Hardware Power Managementfeatures . . . . . . . . . . . . . . . 90Automatic Power-On features . . . . . . . 90Network settings . . . . . . . . . . . . 90Flash over LAN (update POST/BIOS overnetwork) . . . . . . . . . . . . . . 91Wake on LAN . . . . . . . . . . . . 91Security featuresSecurity features in this section include the following:v Passwordsv Vital Product Datav Management Information Format (MIF)v Alert on LANPasswordsThe following section provides information about computer hardware andsoftware-related passwords.v Power-on Passwordv Administrator Passwordv Operating System PasswordPower-on and Administrator passwords are set in the Setup Utility program. See“Setup Utility program” on page 7 for information about running the Setup Utility.Power-on passwordA power-on password denies access to the computer by an unauthorized userwhen the computer is powered on. When a power-on password is active, thepassword prompt appears on the screen each time the computer is powered on.The computer starts after the proper password is entered.Removing a power-on passwordTo service a computer with an active and unknown power-on password, power-offthe computer and use the following procedure.Note: On some models, this procedure will also remove the administrator password.1. Unplug the power cord and remove the top cover.2. Refer to “A40/A40P/A40i system board layout” on page 29 to find therecovery jumper.3. Move the recovery jumper from normal to clear.4. Power-on the computer. The system senses the change in the position anderases the password. It is necessary to move the jumper back to the previous position.© Copyright IBM Corp. 2000 85