Select your cookie preferences

We use essential cookies and similar tools that are necessary to provide our site and services. We use performance cookies to collect anonymous statistics, so we can understand how customers use our site and make improvements. Essential cookies cannot be deactivated, but you can choose “Customize” or “Decline” to decline performance cookies.

If you agree, AWS and approved third parties will also use cookies to provide useful site features, remember your preferences, and display relevant content, including relevant advertising. To accept or decline all non-essential cookies, choose “Accept” or “Decline.” To make more detailed choices, choose “Customize.”

Preferences
Contact Us
Feedback
AWS Documentation
Create an AWS Account

UEFI Preferred and Secure Boot

PDF
RSS
Focus mode
UEFI Preferred and Secure Boot - Amazon Linux 2023

By default, any instances launched with the AL2023 AMI on instance types that support UEFI firmware will launch in UEFI mode. This is done by setting the Boot Mode AMI parameter to uefi-preferred. For more information, see Boot Modes in the Amazon EC2 User Guide.

On Amazon EC2 instance types that support UEFI Secure Boot, it is possible to enable Secure Boot in Amazon Linux 2023. For more information, see UEFI Secure Boot on AL2023.

PrivacySite termsCookie preferences
© 2025, Amazon Web Services, Inc. or its affiliates. All rights reserved.