I've attempted the same with no success, I do not believe this has been integrated, at least as of Debian 11.5. I do hope this is upstreamed at some point, as it's a big win for those setting up systems without hardware raid but require the ability to survive OS disk failures and still boot without a lot of manual setup.
On Wed, 11 Aug 2021 10:38:45 -0400 Frank Myhr <fm...@larkmoor.net> wrote: > I ran into this yesterday while installing Bullseye on a UEFI system > with multiple drives and ESPs. Here are a couple of links describing how > Ubuntu's multi-ESP works: > > https://unix.stackexchange.com/questions/621942/mirroring-efi-system-partition-esp-on-ubuntu > > https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1466150 > > I tried running > dpkg-reconfigure grub-efi-amd64 > on my multi-ESP Bullseye system in the hope that the Ubuntu support may > have been upstreamed, but alas it has not yet happened. I'll ask on > Ubuntu list as well whether someone is working on upstreaming. > >
