You are correct that subiquity does not allow you to put the ESP on a metadata 1.2 MD RAID device. That's because, to the best of my knowledge, almost all firmware does not know about MD RAID formats and so would be unable to boot the system.
The question thus becomes, how can the installer know that putting the ESP on a metadata 1.2 MD RAID is going to work? I presume we can identify your firmware by looking at sysfs somehow or other? I still wouldn't be amazingly happy about doing this because it is a general goal of Ubuntu's installers that you can transfer a disk between systems and still have it boot, but that's probably not so important for the server use case. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1961079 Title: [Ubuntu 22.04] Allow ESP installation on md-disks in subiquity To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1961079/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
