On 08/10/2025 05:46, Ram Ramesh wrote:
However, is it better to rsync the two EFI partitions or simply mount the second efi and grub-install creating a fresh copy of EFI files?
In the case of SecureBoot, files in EFI/debian should be identical. On the other hand, grub-install should create a boot entry in firmware configuration, see its --no-nvram option. You may do it yourself by calling efibootmgr explicitly instead (just once, not as a part of sync procedure).
