Lenovo ThinkPad Edge E525 (English) User Guide - Page 123
Updating your system UEFI BIOS
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Table 6. Startup menu items (continued) Menu item Selection Option Keys Display Boot Device List F12 Option Boot Order Lock • Disabled • Enabled • Disabled • Enabled • Disabled • Enabled Comments Note: You can also enter the "Diagnostic" mode by pressing Esc during POST. If you select "Disabled," then the message "To interrupt normal startup, press Enter" is not displayed during the POST. If you select "Enabled," the F12 key is recognized and the Boot Menu is displayed. If you select "Enabled," the Boot Priority Order is locked for your future use. Updating your system UEFI BIOS The Unified Extensible Firmware Interface (UEFI) BIOS is a part of the system programs that make up the basic layer of software built into your computer. The UEFI BIOS translates the instructions from other software layers. Your computer system board has a module called electrically erasable programmable read-only memory (EEPROM, also referred to as flash memory). You can update the UEFI BIOS and the Configuration/ThinkPad Setup program by starting your computer with a flash update optical disc or flash update tool application running in the Windows environment. In some instances when you add software, hardware, or a device driver, you might be informed that you need to update your UEFI BIOS in order for the new addition to work properly. To update your UEFI BIOS, go to the following Web site and follow the instructions on the screen: http://www.lenovo.com/ThinkPadDrivers Chapter 7. Advanced configuration 105