OFICIAL AWS What's New

AWS Elastic Disaster Recovery now preserves UEFI boot mode for Linux servers

What happened
Based on AWS What's New · Aug 10, 2026

AWS Elastic Disaster Recovery (DRS) now maintains UEFI boot mode for recovered Linux servers, eliminating post-recovery configuration steps and ensuring consistency with source environments.

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AWS Elastic Disaster Recovery now preserves UEFI boot mode for Linux servers
AWS What's New — Amazon Web Services
Key points
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AWS Elastic Disaster Recovery (AWS DRS) now preserves UEFI boot mode when recovering Linux source servers that boot with UEFI firmware.
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Previously, DRS launched these Linux servers in legacy BIOS mode, which could require extra configuration after recovery.
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Now your recovered Linux instances launch with the same UEFI boot mode as your source servers.
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This means your recovery instances more closely match your source environment, so applications that depend on UEFI boot behavior come back exactly as you expect — with no additional post-recovery steps.

AWS Elastic Disaster Recovery (AWS DRS) has introduced a feature that preserves UEFI boot mode for Linux servers during disaster recovery operations. Previously, recovered Linux instances launched in legacy BIOS mode, often requiring manual adjustments. The new capability ensures recovered servers match the original UEFI configuration automatically, reducing downtime and operational overhead. This change applies to all AWS Regions where AWS DRS is available, with no additional fees.

The update addresses a gap in compatibility for Linux workloads that depend on UEFI boot behavior, such as those using Secure Boot or specific kernel configurations. AWS DRS now detects and replicates the boot mode of source servers without user intervention. This eliminates the need for post-recovery adjustments, streamlining recovery processes for critical applications. The feature is enabled by default and requires no configuration changes from users.

AWS DRS supports a wide range of Linux distributions, including Amazon Linux, Red Hat Enterprise Linux, SUSE Linux Enterprise Server, and Ubuntu. The preservation of UEFI boot mode applies to both physical and virtual source servers. AWS has not specified a release date for this feature, as it is now generally available across all supported regions. Users can verify the boot mode of recovered instances through standard AWS tools.

To implement this capability, AWS DRS leverages existing replication and recovery workflows, ensuring minimal disruption to existing processes. The company states that this enhancement improves the reliability of disaster recovery for Linux environments. For detailed guidance, AWS directs users to the Elastic Disaster Recovery User Guide, which includes configuration examples and troubleshooting steps.

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