initrd-flash files

[albertbu]

Hi,
could somebody be so kind to explain me what are the files that are programmed in the jetson using initrd-flash?
Creating partitions [02] name=A_kernel start=0 size=262144 sectors [03] name=A_kernel-dtb start=0 size=1536 sectors [04] name=A_reserved_on_user start=0 size=64768 sectors [05] name=B_kernel start=0 size=262144 sectors [06] name=B_kernel-dtb start=0 size=1536 sectors [07] name=B_reserved_on_user start=0 size=64768 sectors [08] name=recovery start=0 size=163840 sectors [09] name=recovery-dtb start=0 size=1024 sectors [10] name=esp start=0 size=131072 sectors [11] name=recovery_alt start=0 size=163840 sectors [12] name=recovery-dtb_alt start=0 size=1024 sectors [13] name=esp_alt start=0 size=131072 sectors

What are all the "A/B and "alt" partitions? I am NOT using the A/B rootfs scheme.
Thanks

[albertbu]

Apologize for the bad formatting, I noticed it only after completing the question

[dwalkes]

These match the partitions in https://docs.nvidia.com/jetson/archives/r36.3/DeveloperGuide/AR/BootArchitecture/PartitionConfiguration.html#partition-configuration-files which are the default for the platform. Many of them contain A and B partition backup partitions even when they are not specifically in use. You can customize if desired. Files are extracted to a path like tmp/work-shared/L4T-tegra-*/Linux_for_Tegra/bootloader/generic/cfg/ in your build dir.