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Microsoft Windows 10 IoT Enterprise for Dell Wyse Thin Clients Administrator’s Guide

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Unified Extensible Firmware Interface and secure boot

Unified Extensible Firmware Interface (UEFI) is a standard firmware interface designed to improve software interoperability and address limitations of BIOS. UEFI is designed to replace Basic Input Output System (BIOS).

Secure Boot is a feature on UEFI-based clients that help increase the security of a client by preventing unauthorized software from running on a client during the boot sequence. It checks whether each software has a valid signature, including the operating system (OS) that is loaded during booting.

The thin client device is enabled with UEFI and Secure Boot. Due to this feature, you cannot boot from USB keys if you do not enter the BIOS, disable Secure Boot, change the boot mode to Legacy, and enable the Boot from USB option.


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