Comment #11 - it looks you installed on GPT without a bios boot partition, so there's no space to embed BIOS grub. The installer will have warned you, please listen to it.
Jeremie, the correct workaround is to deselect the EFI system partition when you configure partitions in the installer, as I explained in comment #5. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1924823 Title: ESP on install medium automatically configured as ESP for install, failing install To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1924823/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs