If you select and enable Password at unattended boot, a password prompt is displayed when the computer is turned on, from either a power-off state or hibernation, by an unattended event such as Wake on LAN®. If you select Disabled, no password prompt is displayed; the computer goes ahead and loads the operating system. To prevent unauthorized access, set the user authentication on the operating system.

If you select and enable Password at restart, a password prompt is displayed when you restart the computer. If you select Disabled, no password prompt is displayed; the computer goes ahead and loads the operating system. To prevent unauthorized access, set the user authentication on the operating system.

Startup menu

You may need to change the startup sequence of your computer. For example, if you have different operating systems on different devices, you can have the system start up from either of them.

Attention: After you change your startup sequence, you must be extremely careful not to specify a wrong device during a copy, a save, or a format operation. If you specify a wrong device, your data and programs might be erased or overwritten.

Attention: If you are using the BitLocker drive encryption, you should not change the startup sequence. BitLocker drive encryption detects the change of startup sequence and locks the computer from booting.

Changing the startup sequence

Selecting the Startup to display the Boot submenu.

To change the startup sequence, do the following:

1.Select Boot; then press Enter.

•You can use the Boot submenu to specify the startup sequence that runs when you turn on the power. Refer to “Boot submenu” on page 184.

•You can use the Network Boot to specify the top priority boot device that runs when Wake on LAN is commonly used by LAN administrators in corporate networks to get remote access to your computer. Refer to “Network Boot” on page 185.

2.Select the device you want to start first.

Use these keys to set the order that the UEFI BIOS will use when starting an operating system:

•+ or - key moves the device up or down.

3.Press F10 to save the changes and restart the system.

To change the startup sequence temporarily so that the system starts up from a different drive, do the following:

1.Turn off the computer.

2.Turn on the computer; then, while the “To interrupt normal startup, press the blue ThinkVantage button” message is displayed at the lower-left of the screen, press F12.

3.Select the device you want to start first from the Boot menu.

Note: The Boot menu is also shown when the system cannot boot from any devices or operating system was not found.

Boot submenu

The following list, showing the order in which devices will be started up, is always displayed. Even devices that are not attached to or installed on your computer are listed. For each device that is attached to or installed on the computer, information about it is presented after the colon.

1. USB CD:

184User Guide

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Lenovo 4290WFZPC10D518, X220I TABLET, X220 TABLET, X220-4287 Startup menu, Changing the startup sequence, Boot submenu
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4291BR6PC10B616, 42875TU, 428742U, 4294CTO, X220-4287 specifications

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