grub: adjust BOOT_IMAGE arg for PCR 9 predictions - #343
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Patch GRUB to replace the first argument on the kernel command line from the default: BOOT_IMAGE=(hdX,gptY)/vmlinuz With a predictable value that doesn't depend on the boot device: BOOT_IMAGE=/vmlinuz Signed-off-by: Ben Cressey <bcressey@amazon.com>
jpculp
approved these changes
Dec 19, 2025
yeazelm
approved these changes
Jan 5, 2026
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Issue number:
Related: bottlerocket-os/twoliter#625
Description of changes:
Patch GRUB to replace the first argument on the kernel command line from the default:
With a predictable value that doesn't depend on the boot device:
Testing done:
Verified that variants still boot, and that the kernel command line has the expected constant value:
Terms of contribution:
By submitting this pull request, I agree that this contribution is dual-licensed under the terms of both the Apache License, version 2.0, and the MIT license.