@stewart I think you're seeing this bug:
https://bugs.launchpad.net/ubuntu/+source/curtin/+bug/1849322 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1841321 Title: Curtin Fails to Validate Storage Config with Crucial P1 NVMe drive To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/curtin/+bug/1841321/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs