Lenovo TC A51-8425, TC A51-8424 Selecting a startup device, Selecting a temporary startup device

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Selecting a startup device

If your 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 a startup device.

Selecting a temporary startup device

Use this procedure to startup from any boot device.

Note: Not all CDs, hard disks, and diskettes are startable (bootable).

1.Turn off your computer.

2.Turn on your computer and look for the following prompt on the logo screen:

(To interrupt normal startup, press Enter)

Press Enter when you see the prompt.

3.When the Startup Interrupt Menu displays, press F12.

4.Select the desired startup device from the Startup Device menu and press Enter to begin.

Note: Selecting a startup device from the Startup Device menu does not permanently change the startup sequence.

Changing the startup device sequence

To view or permanently change the configured startup device sequence, do the following:

1.Start the IBM Setup Utility program (see “Starting the IBM Setup Utility program” on page 25).

2.Select Startup.

3.Select Startup Sequence. See the information displayed on the right side of the screen.

4.Select the devices for the Primary Startup Sequence, the Automatic Startup Sequence, and the Error Startup Sequence.

5.Select Exit from the IBM Setup Utility menu and then Save Settings or Save and exit the Setup Utility.

If you have changed these settings and want to return to the default settings, select Load Default Settings on the Exit menu.

Advanced settings

On some computer models the Advanced settings menu includes a setting to Enable/Disable HyperThreading. This feature works only with HyperThreading-aware operating systems such as Microsoft Windows XP. The default setting for HyperThreading is Enabled. However, if you select Set Defaults and are using an operating system other than Windows XP, your computer performance might be degraded. Therefore, you should always set HyperThreading to Disabled unless you are sure your operating system supports HyperThreading.

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Contents User Guide Types 8424, 8425 Types 8171, 8172 Page User Guide Types 8424, 8425 Types 8171, 8172 Page Contents Iv User Guide Important safety information Conditions that require immediate actionGeneral safety guidelines ServicePower cords and power adapters Extension cords and related devices Plugs and outletsBatteries CD and DVD drive safety Additional safety informationHeat and product ventilation To connect To disconnect Lithium battery notice Modem safety informationConnexion Déconnexion Laser compliance statement Consignes de sécurité relatives au modemXii User Guide Overview Information resourcesFeatures Security features Input/output featuresPower ExpansionIBM preinstalled software Operating systems preinstalled varies by model Available optionsSpecifications Supported operating positions User Guide Installing options Installing external optionsHandling static-sensitive devices Cover keylock some models Locating connectors on the rear of your computer Obtaining device driversOpening the cover Locating components Accessing system board components and drives Identifying parts on the system board Installing memory Installing PCI adapters Removing and replacing the battery What to do nextRemoving and replacing an optical drive Installing security features Removing and replacing a diskette driveIdentifying security locks Integrated security cableUser Guide Rope clip Password protectionTo install a rope clip Cover lockErasing a lost or forgotten password clearing Cmos Closing the cover and connecting the cablesViewing and changing settings Using the IBM Setup UtilityStarting the IBM Setup Utility program Exiting from the IBM Setup Utility programAdministrator Password Password considerationsUser Password IDE Drive User PasswordUsing Security Profile by Device IDE Drive Master PasswordSetting, changing, and deleting a password Select Security Profile by DeviceSelecting a temporary startup device Advanced settingsSelecting a startup device Changing the startup device sequenceAppendix A. Updating POST/BIOS Updating flashing Bios from a disketteUpdating flashing Bios from your operating system Recovering from a POST/BIOS update failure Appendix B. Cleaning the mouse Cleaning an optical mouseCleaning a mouse with a ball User Guide Appendix C. Manual modem commands Basic AT commandsSet Tone Dial as default Low speaker volumeSet Pulse dial as default Internal speaker on until carrier detectedExtended AT commands MNP/V.42/V.42bis/V.44 commands Fax Class 1 commands Fax Class 2 commandsVoice commands Appendix C. Manual modem commands User Guide Appendix D. Notices Trademarks IBMIndex Special characters Page Page Part Number 19R0474
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