I have something to add to this. This morning I was writing up a
document on how to convert an existing Debian amd64 AWS VM to arm64
without reinstalling, which is something I was interested in doing in
the future to a fairly complex system install that I wasn't excited
about trying to reinstall/migrate. Everything worked with the
conversion, except for the grub stage, grub failed to start on the ARM
instance and was stuck at the grub-rescue prompt. When typing "insmod
normal", it shows the "symbol `grub_is_lockdown` not found" error. I
managed to get it working by copying grub modules from an existing
Debian ARM VM over to it, I did that because I noticed that the modules
were of a newer version and a different size.
I'm not sure if the "grub-install" step was needed, but after
investigating I found that when I ran grub-install a standard
Debian-provided ARM AWS community instance and rebooted, the instance
fails to boot in the same way.
This is my document if you were interested, I mention the error in it:
https://ryan.thoryk.com/linux/arm_convert.html
--
Ryan Thoryk
r...@thoryk.com
r...@tliquest.net
