IBM ThinkCentre 8127 Hardware Maintenance Manual

Contents

Selecting a startup deviceIf the computer does not start up (boot) from a device such as the CD-ROM,diskette, or hard disk as expected, use one of the following procedures to select astartup device.Selecting a temporary startup deviceUse this procedure to startup from any boot device.Note: Not all CDs, hard disks, and diskettes are startable (bootable).1. Turn off the computer.2. Press and hold the Enter key and turn on the computer. Release the Enter keywhen the logo appears.3. The Access IBM Predesktop Area opens.4. Click Startup and follow the instructions on the screen.Note: Selecting a startup device from this list does not permanently change thestartup sequence.Changing the startup device sequenceTo view or permanently change the configured startup device sequence, do thefollowing:1. Start the IBM Setup Utility program (see “Starting the IBM Setup Utilityprogram” on page 19).2. Select Startup.3. Select Startup Sequence. See the information displayed on the right side of thescreen.4. Select the devices for the Primary Startup Sequence, the Automatic StartupSequence, and the Error Startup Sequence.5. Select Exit from the IBM Setup Utility menu and then Save Settings or Saveand exit the Setup Utility.If you have changed these settings and want to return to the default settings, selectLoad Default Settings on the Exit menu.Advanced settingsOn some computer models the Advanced settings menu includes a setting toEnable/Disable HyperThreading. This feature works only withHyperThreading-aware operating systems such as Microsoft Windows XP. Thedefault setting for HyperThreading is Enabled. However, if you select Set Defaultsand are using an operating system other than Windows XP, the computerperformance might be degraded. Therefore, you should always setHyperThreading to Disabled unless you are sure your operating system supportsHyperThreading.22 Hardware Maintenance Manual