UEFI, an acronym for Unified Extensible Firmware Interface, is a new type of BIOS that includes several enhancements. And it is a practical concern mainly for brand-new computers that ship with Windows 8 and Windows 10.
Here you will know how to boot from USB when your machine running UEFI.
The settings for different motherboard and BIOS vendors are slightly different. Before going further, please insert USB Flash Drive to your computer.
Most Dell machines run AMI BIOS. To enter BIOS, please press Delete button.
In the BIOS, please choose Boot option. Then disable Secure Boot Control, enable Load Legacy OPROM and change Boot Mode to Legacy. At last, change 1st Boot Device to USB Storage Device. Press F10 to save.
This is exclusive for HP machines.
Please press F2 to enter BIOS. Select Security, in the drop down list, choose Secure Boot Configuration, in the pop up window, please enable Legacy Boot and disable Secure Boot. Press F10 to save.
However, you can’t set the boot order here. You need to restart your computer and press F9. Then you can see Boot Order window, in the Legacy Boot Source, please choose USB Floppy.
This is exclusive for Lenovo machines.
Please click F2 to enter BIOS. In the Security option, disable Secure Boot.
In Startup option, please choose Both for UEFI/Legacy Boot and Yes for CSM Support. Press F10 to save.
Most computer models including Acer, Toshiba, Samsung, Sony, Gateway and more use this one.
Please press F2 to enter BIOS, in the Security option, disable Secure Boot. In the Boot option, click Boot Mode, in the pop window, choose Legacy BIOS. In the Boot Priority order, change USB HDD as the first one boot order. Press F10 to save.
This is exclusive for Asus machines.
Press F2 to enter BIOS, choose Boot option and click Boot Device Control. In the pop up window, select Legacy OpROM only.
Drop down the list, please disable Secure Boot and enable CSM. In Boot Option Priorities, please change USB as the Boot Option #1. Then press F10 to save.
To boot computer from USB drive in basic BIOS, you can refer to this article.
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