Here's a Debian bug report from 2019 for the same issue: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=925591
** Bug watch added: Debian Bug tracker #925591 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=925591 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1868553 Title: libefi* integration breaks grub-install on MD devices To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/curtin/+bug/1868553/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs