Lenovo ThinkPad Edge E520 (English) User Guide - Page 140

Startup menu items, Boot Device List F12 Option

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Startup menu items Table 6. Startup menu items Menu item Boot Network Boot UEFI/Legacy Boot UEFI/Legacy Boot Priority Boot Mode Option Keys Display Boot Device List F12 Option Boot Order Lock Selection • Both • UEFI Only • Legacy Only • UEFI First • Legacy First • Quick • Diagnostics Note: You can also enter the "Diagnostic" mode by pressing Esc during POST. • Disabled • Enabled • Disabled • Enabled • Disabled • Enabled Comments Refer to "Startup menu" on page 115. Refer to "Startup menu" on page 115. Enable the UEFI/Legacy boot. Select priority of boot option between UEFI and Legacy. Screen during POST: • Quick: ThinkPad Logo screen is displayed. • Diagnostics: Test messages are displayed. Beep at POST completion: • Quick: No. Sound on error case only. • Diagnostics: Yes. Always sounds. "Ctrl-S" prompt for on-board Ethernet: • Quick: No. • Diagnostics: Yes. Memory testing during POST: • Quick: Quick test (or no test). • Diagnostics: Full test. Testing other devices during POST: • Quick: Minimum test (or no test). • Diagnostics: Can perform necessary testing for critical devices. If you select "Disabled", then "To interrupt normal startup, press Enter" message is not displayed during 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. 122 User Guide

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Startup menu items
Table 6. Startup menu items
Menu item
Selection
Comments
Boot
Refer to “Startup menu” on page 115.
Network Boot
Refer to “Startup menu” on page 115.
UEFI/Legacy Boot
Both
UEFI Only
Legacy Only
Enable the UEFI/Legacy boot.
UEFI/Legacy Boot Priority
UEFI First
Legacy First
Select priority of boot option between
UEFI and Legacy.
Boot Mode
Quick
Diagnostics
Note:
You can also enter the
“Diagnostic” mode by pressing Esc
during POST.
Screen during POST:
Quick
: ThinkPad Logo screen is
displayed.
Diagnostics
: Test messages are
displayed.
Beep at POST completion:
Quick
: No. Sound on error case
only.
Diagnostics
: Yes. Always sounds.
“Ctrl-S” prompt for on-board
Ethernet:
Quick
: No.
Diagnostics
: Yes.
Memory testing during POST:
Quick
: Quick test (or no test).
Diagnostics
: Full test.
Testing other devices during POST:
Quick
: Minimum test (or no test).
Diagnostics
: Can perform
necessary testing for critical
devices.
Option Keys Display
Disabled
Enabled
If you select “Disabled”, then “To
interrupt normal startup, press Enter”
message is not displayed during
POST.
Boot Device List F12 Option
Disabled
Enabled
If you select “Enabled”, the F12 key
is recognized and the Boot Menu is
displayed.
Boot Order Lock
Disabled
Enabled
If you select “Enabled”, the Boot
Priority Order is locked for your future
use.
122
User Guide